<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux-stable.git/drivers/mmc, branch v4.19.296</title>
<subtitle>Linux kernel stable tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/'/>
<entry>
<title>mmc: au1xmmc: force non-modular build and remove symbol_get usage</title>
<updated>2023-09-23T08:47:56+00:00</updated>
<author>
<name>Christoph Hellwig</name>
<email>hch@lst.de</email>
</author>
<published>2023-08-01T17:35:41+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=0ef9a894634d27037511470f5477cd9ab198fe90'/>
<id>0ef9a894634d27037511470f5477cd9ab198fe90</id>
<content type='text'>
commit d4a5c59a955bba96b273ec1a5885bada24c56979 upstream.

au1xmmc is split somewhat awkwardly into the main mmc subsystem driver,
and callbacks in platform_data that sit under arch/mips/ and are
always built in.  The latter than call mmc_detect_change through
symbol_get.  Remove the use of symbol_get by requiring the driver
to be built in.  In the future the interrupt handlers for card
insert/eject detection should probably be moved into the main driver,
and which point it can be built modular again.

Signed-off-by: Christoph Hellwig &lt;hch@lst.de&gt;
Acked-by: Manuel Lauss &lt;manuel.lauss@gmail.com&gt;
Reviewed-by: Arnd Bergmann &lt;arnd@arndb.de&gt;
[mcgrof: squashed in depends on MMC=y suggested by Arnd]
Signed-off-by: Luis Chamberlain &lt;mcgrof@kernel.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit d4a5c59a955bba96b273ec1a5885bada24c56979 upstream.

au1xmmc is split somewhat awkwardly into the main mmc subsystem driver,
and callbacks in platform_data that sit under arch/mips/ and are
always built in.  The latter than call mmc_detect_change through
symbol_get.  Remove the use of symbol_get by requiring the driver
to be built in.  In the future the interrupt handlers for card
insert/eject detection should probably be moved into the main driver,
and which point it can be built modular again.

Signed-off-by: Christoph Hellwig &lt;hch@lst.de&gt;
Acked-by: Manuel Lauss &lt;manuel.lauss@gmail.com&gt;
Reviewed-by: Arnd Bergmann &lt;arnd@arndb.de&gt;
[mcgrof: squashed in depends on MMC=y suggested by Arnd]
Signed-off-by: Luis Chamberlain &lt;mcgrof@kernel.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>mmc: block: Fix in_flight[issue_type] value error</title>
<updated>2023-08-30T14:31:56+00:00</updated>
<author>
<name>Yibin Ding</name>
<email>yibin.ding@unisoc.com</email>
</author>
<published>2023-08-02T02:30:23+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=b3cd44bff89566bca59fa9cdeb1cd29c8c57752e'/>
<id>b3cd44bff89566bca59fa9cdeb1cd29c8c57752e</id>
<content type='text'>
commit 4b430d4ac99750ee2ae2f893f1055c7af1ec3dc5 upstream.

For a completed request, after the mmc_blk_mq_complete_rq(mq, req)
function is executed, the bitmap_tags corresponding to the
request will be cleared, that is, the request will be regarded as
idle. If the request is acquired by a different type of process at
this time, the issue_type of the request may change. It further
caused the value of mq-&gt;in_flight[issue_type] to be abnormal,
and a large number of requests could not be sent.

p1:					      p2:
mmc_blk_mq_complete_rq
  blk_mq_free_request
					      blk_mq_get_request
					        blk_mq_rq_ctx_init
mmc_blk_mq_dec_in_flight
  mmc_issue_type(mq, req)

This strategy can ensure the consistency of issue_type
before and after executing mmc_blk_mq_complete_rq.

Fixes: 81196976ed94 ("mmc: block: Add blk-mq support")
Cc: stable@vger.kernel.org
Signed-off-by: Yibin Ding &lt;yibin.ding@unisoc.com&gt;
Acked-by: Adrian Hunter &lt;adrian.hunter@intel.com&gt;
Link: https://lore.kernel.org/r/20230802023023.1318134-1-yunlong.xing@unisoc.com
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Signed-off-by: Adrian Hunter &lt;adrian.hunter@intel.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 4b430d4ac99750ee2ae2f893f1055c7af1ec3dc5 upstream.

For a completed request, after the mmc_blk_mq_complete_rq(mq, req)
function is executed, the bitmap_tags corresponding to the
request will be cleared, that is, the request will be regarded as
idle. If the request is acquired by a different type of process at
this time, the issue_type of the request may change. It further
caused the value of mq-&gt;in_flight[issue_type] to be abnormal,
and a large number of requests could not be sent.

p1:					      p2:
mmc_blk_mq_complete_rq
  blk_mq_free_request
					      blk_mq_get_request
					        blk_mq_rq_ctx_init
mmc_blk_mq_dec_in_flight
  mmc_issue_type(mq, req)

This strategy can ensure the consistency of issue_type
before and after executing mmc_blk_mq_complete_rq.

Fixes: 81196976ed94 ("mmc: block: Add blk-mq support")
Cc: stable@vger.kernel.org
Signed-off-by: Yibin Ding &lt;yibin.ding@unisoc.com&gt;
Acked-by: Adrian Hunter &lt;adrian.hunter@intel.com&gt;
Link: https://lore.kernel.org/r/20230802023023.1318134-1-yunlong.xing@unisoc.com
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Signed-off-by: Adrian Hunter &lt;adrian.hunter@intel.com&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>mmc: wbsd: fix double mmc_free_host() in wbsd_init()</title>
<updated>2023-08-30T14:31:50+00:00</updated>
<author>
<name>Yang Yingliang</name>
<email>yangyingliang@huawei.com</email>
</author>
<published>2023-08-07T12:44:42+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=fe1e06a27e6c8d98abcdac83d8a55225b7edeffc'/>
<id>fe1e06a27e6c8d98abcdac83d8a55225b7edeffc</id>
<content type='text'>
commit d83035433701919ac6db15f7737cbf554c36c1a6 upstream.

mmc_free_host() has already be called in wbsd_free_mmc(),
remove the mmc_free_host() in error path in wbsd_init().

Fixes: dc5b9b50fc9d ("mmc: wbsd: fix return value check of mmc_add_host()")
Signed-off-by: Yang Yingliang &lt;yangyingliang@huawei.com&gt;
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230807124443.3431366-1-yangyingliang@huawei.com
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit d83035433701919ac6db15f7737cbf554c36c1a6 upstream.

mmc_free_host() has already be called in wbsd_free_mmc(),
remove the mmc_free_host() in error path in wbsd_init().

Fixes: dc5b9b50fc9d ("mmc: wbsd: fix return value check of mmc_add_host()")
Signed-off-by: Yang Yingliang &lt;yangyingliang@huawei.com&gt;
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230807124443.3431366-1-yangyingliang@huawei.com
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>mmc: sunxi: fix deferred probing</title>
<updated>2023-08-30T14:31:46+00:00</updated>
<author>
<name>Sergey Shtylyov</name>
<email>s.shtylyov@omp.ru</email>
</author>
<published>2023-06-17T20:36:21+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=0f382111cd997cf0ed79e4a4ff689af1aaac4983'/>
<id>0f382111cd997cf0ed79e4a4ff689af1aaac4983</id>
<content type='text'>
[ Upstream commit c2df53c5806cfd746dae08e07bc8c4ad247c3b70 ]

The driver overrides the error codes and IRQ0 returned by platform_get_irq()
to -EINVAL, so if it returns -EPROBE_DEFER, the driver will fail the probe
permanently instead of the deferred probing. Switch to propagating the error
codes upstream.  Since commit ce753ad1549c ("platform: finally disallow IRQ0
in platform_get_irq() and its ilk") IRQ0 is no longer returned by those APIs,
so we now can safely ignore it...

Fixes: 2408a08583d2 ("mmc: sunxi-mmc: Handle return value of platform_get_irq")
Cc: stable@vger.kernel.org # v5.19+
Signed-off-by: Sergey Shtylyov &lt;s.shtylyov@omp.ru&gt;
Reviewed-by: Jernej Skrabec &lt;jernej.skrabec@gmail.com&gt;
Link: https://lore.kernel.org/r/20230617203622.6812-12-s.shtylyov@omp.ru
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit c2df53c5806cfd746dae08e07bc8c4ad247c3b70 ]

The driver overrides the error codes and IRQ0 returned by platform_get_irq()
to -EINVAL, so if it returns -EPROBE_DEFER, the driver will fail the probe
permanently instead of the deferred probing. Switch to propagating the error
codes upstream.  Since commit ce753ad1549c ("platform: finally disallow IRQ0
in platform_get_irq() and its ilk") IRQ0 is no longer returned by those APIs,
so we now can safely ignore it...

Fixes: 2408a08583d2 ("mmc: sunxi-mmc: Handle return value of platform_get_irq")
Cc: stable@vger.kernel.org # v5.19+
Signed-off-by: Sergey Shtylyov &lt;s.shtylyov@omp.ru&gt;
Reviewed-by: Jernej Skrabec &lt;jernej.skrabec@gmail.com&gt;
Link: https://lore.kernel.org/r/20230617203622.6812-12-s.shtylyov@omp.ru
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>mmc: bcm2835: fix deferred probing</title>
<updated>2023-08-30T14:31:46+00:00</updated>
<author>
<name>Sergey Shtylyov</name>
<email>s.shtylyov@omp.ru</email>
</author>
<published>2023-06-17T20:36:11+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=38f5548d8770b1a8b720a1a2b296c4f8e1bd57b2'/>
<id>38f5548d8770b1a8b720a1a2b296c4f8e1bd57b2</id>
<content type='text'>
[ Upstream commit 71150ac12558bcd9d75e6e24cf7c872c2efd80f3 ]

The driver overrides the error codes and IRQ0 returned by platform_get_irq()
to -EINVAL, so if it returns -EPROBE_DEFER, the driver will fail the probe
permanently instead of the deferred probing. Switch to propagating the error
codes upstream.  Since commit ce753ad1549c ("platform: finally disallow IRQ0
in platform_get_irq() and its ilk") IRQ0 is no longer returned by those APIs,
so we now can safely ignore it...

Fixes: 660fc733bd74 ("mmc: bcm2835: Add new driver for the sdhost controller.")
Cc: stable@vger.kernel.org # v5.19+
Signed-off-by: Sergey Shtylyov &lt;s.shtylyov@omp.ru&gt;
Link: https://lore.kernel.org/r/20230617203622.6812-2-s.shtylyov@omp.ru
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 71150ac12558bcd9d75e6e24cf7c872c2efd80f3 ]

The driver overrides the error codes and IRQ0 returned by platform_get_irq()
to -EINVAL, so if it returns -EPROBE_DEFER, the driver will fail the probe
permanently instead of the deferred probing. Switch to propagating the error
codes upstream.  Since commit ce753ad1549c ("platform: finally disallow IRQ0
in platform_get_irq() and its ilk") IRQ0 is no longer returned by those APIs,
so we now can safely ignore it...

Fixes: 660fc733bd74 ("mmc: bcm2835: Add new driver for the sdhost controller.")
Cc: stable@vger.kernel.org # v5.19+
Signed-off-by: Sergey Shtylyov &lt;s.shtylyov@omp.ru&gt;
Link: https://lore.kernel.org/r/20230617203622.6812-2-s.shtylyov@omp.ru
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>mmc: Remove dev_err() usage after platform_get_irq()</title>
<updated>2023-08-30T14:31:46+00:00</updated>
<author>
<name>Stephen Boyd</name>
<email>swboyd@chromium.org</email>
</author>
<published>2019-07-30T18:15:29+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=22b64a6b59fc2107d304715d8a778eebeb8659ae'/>
<id>22b64a6b59fc2107d304715d8a778eebeb8659ae</id>
<content type='text'>
[ Upstream commit 9a7957d0c9557f7780cdda970a2530d6351bd861 ]

We don't need dev_err() messages when platform_get_irq() fails now that
platform_get_irq() prints an error message itself when something goes
wrong. Let's remove these prints with a simple semantic patch.

// &lt;smpl&gt;
@@
expression ret;
struct platform_device *E;
@@

ret =
(
platform_get_irq(E, ...)
|
platform_get_irq_byname(E, ...)
);

if ( \( ret &lt; 0 \| ret &lt;= 0 \) )
{
(
-if (ret != -EPROBE_DEFER)
-{ ...
-dev_err(...);
-... }
|
...
-dev_err(...);
)
...
}
// &lt;/smpl&gt;

While we're here, remove braces on if statements that only have one
statement (manually).

Cc: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Cc: linux-mmc@vger.kernel.org
Cc: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Signed-off-by: Stephen Boyd &lt;swboyd@chromium.org&gt;
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Stable-dep-of: 71150ac12558 ("mmc: bcm2835: fix deferred probing")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 9a7957d0c9557f7780cdda970a2530d6351bd861 ]

We don't need dev_err() messages when platform_get_irq() fails now that
platform_get_irq() prints an error message itself when something goes
wrong. Let's remove these prints with a simple semantic patch.

// &lt;smpl&gt;
@@
expression ret;
struct platform_device *E;
@@

ret =
(
platform_get_irq(E, ...)
|
platform_get_irq_byname(E, ...)
);

if ( \( ret &lt; 0 \| ret &lt;= 0 \) )
{
(
-if (ret != -EPROBE_DEFER)
-{ ...
-dev_err(...);
-... }
|
...
-dev_err(...);
)
...
}
// &lt;/smpl&gt;

While we're here, remove braces on if statements that only have one
statement (manually).

Cc: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Cc: linux-mmc@vger.kernel.org
Cc: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Signed-off-by: Stephen Boyd &lt;swboyd@chromium.org&gt;
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Stable-dep-of: 71150ac12558 ("mmc: bcm2835: fix deferred probing")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>mmc: tmio: move tmio_mmc_set_clock() to platform hook</title>
<updated>2023-08-30T14:31:46+00:00</updated>
<author>
<name>Masahiro Yamada</name>
<email>yamada.masahiro@socionext.com</email>
</author>
<published>2018-08-23T04:44:16+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=ee9780d7e7ad73ff30b1b49dd6535d88878d90d3'/>
<id>ee9780d7e7ad73ff30b1b49dd6535d88878d90d3</id>
<content type='text'>
[ Upstream commit 0196c8db8363f7627df6f78615271ae0ba430500 ]

tmio_mmc_set_clock() is full of quirks because different SoC vendors
extended this in different ways.

The original IP defines the divisor range 1/2 ... 1/512.

 bit 7 is set:    1/512
 bit 6 is set:    1/256
   ...
 bit 0 is set:    1/4
 all bits clear:  1/2

It is platform-dependent how to achieve the 1/1 clock.

I guess the TMIO-MFD variant uses the clock selector outside of this IP,
as far as I see tmio_core_mmc_clk_div() in drivers/mfd/tmio_core.c

I guess bit[7:0]=0xff is Renesas-specific extension.

Socionext (and Panasonic) uses bit 10 (CLKSEL) for 1/1.  Also, newer
versions of UniPhier SoC variants use bit 16 for 1/1024.

host-&gt;clk_update() is only used by the Renesas variants, whereas
host-&gt;set_clk_div() is only used by the TMIO-MFD variants.

To cope with this mess, promote tmio_mmc_set_clock() to a new
platform hook -&gt;set_clock(), and melt the old two hooks into it.

Signed-off-by: Masahiro Yamada &lt;yamada.masahiro@socionext.com&gt;
Reviewed-by: Wolfram Sang &lt;wsa+renesas@sang-engineering.com&gt;
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Stable-dep-of: 71150ac12558 ("mmc: bcm2835: fix deferred probing")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 0196c8db8363f7627df6f78615271ae0ba430500 ]

tmio_mmc_set_clock() is full of quirks because different SoC vendors
extended this in different ways.

The original IP defines the divisor range 1/2 ... 1/512.

 bit 7 is set:    1/512
 bit 6 is set:    1/256
   ...
 bit 0 is set:    1/4
 all bits clear:  1/2

It is platform-dependent how to achieve the 1/1 clock.

I guess the TMIO-MFD variant uses the clock selector outside of this IP,
as far as I see tmio_core_mmc_clk_div() in drivers/mfd/tmio_core.c

I guess bit[7:0]=0xff is Renesas-specific extension.

Socionext (and Panasonic) uses bit 10 (CLKSEL) for 1/1.  Also, newer
versions of UniPhier SoC variants use bit 16 for 1/1024.

host-&gt;clk_update() is only used by the Renesas variants, whereas
host-&gt;set_clk_div() is only used by the TMIO-MFD variants.

To cope with this mess, promote tmio_mmc_set_clock() to a new
platform hook -&gt;set_clock(), and melt the old two hooks into it.

Signed-off-by: Masahiro Yamada &lt;yamada.masahiro@socionext.com&gt;
Reviewed-by: Wolfram Sang &lt;wsa+renesas@sang-engineering.com&gt;
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Stable-dep-of: 71150ac12558 ("mmc: bcm2835: fix deferred probing")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>mmc: tmio: replace tmio_mmc_clk_stop() calls with tmio_mmc_set_clock()</title>
<updated>2023-08-30T14:31:46+00:00</updated>
<author>
<name>Masahiro Yamada</name>
<email>yamada.masahiro@socionext.com</email>
</author>
<published>2018-08-23T04:44:15+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=e1036bf905f9ec7b01fd5ee946a9a94f9671ee83'/>
<id>e1036bf905f9ec7b01fd5ee946a9a94f9671ee83</id>
<content type='text'>
[ Upstream commit 74005a01f1ff66f98bf24163297932144d4da1ae ]

tmio_mmc_clk_stop(host) is equivalent to tmio_mmc_set_clock(host, 0).
This replacement is needed for the next commit.

Signed-off-by: Masahiro Yamada &lt;yamada.masahiro@socionext.com&gt;
Reviewed-by: Wolfram Sang &lt;wsa+renesas@sang-engineering.com&gt;
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Stable-dep-of: 71150ac12558 ("mmc: bcm2835: fix deferred probing")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 74005a01f1ff66f98bf24163297932144d4da1ae ]

tmio_mmc_clk_stop(host) is equivalent to tmio_mmc_set_clock(host, 0).
This replacement is needed for the next commit.

Signed-off-by: Masahiro Yamada &lt;yamada.masahiro@socionext.com&gt;
Reviewed-by: Wolfram Sang &lt;wsa+renesas@sang-engineering.com&gt;
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Stable-dep-of: 71150ac12558 ("mmc: bcm2835: fix deferred probing")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>mmc: meson-gx: remove redundant mmc_request_done() call from irq context</title>
<updated>2023-08-30T14:31:46+00:00</updated>
<author>
<name>Martin Hundebøll</name>
<email>martin@geanix.com</email>
</author>
<published>2023-06-07T08:27:12+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=74fc50666e0af2514a7e6b0937166a75692c2a42'/>
<id>74fc50666e0af2514a7e6b0937166a75692c2a42</id>
<content type='text'>
[ Upstream commit 3c40eb8145325b0f5b93b8a169146078cb2c49d6 ]

The call to mmc_request_done() can schedule, so it must not be called
from irq context. Wake the irq thread if it needs to be called, and let
its existing logic do its work.

Fixes the following kernel bug, which appears when running an RT patched
kernel on the AmLogic Meson AXG A113X SoC:
[   11.111407] BUG: scheduling while atomic: kworker/0:1H/75/0x00010001
[   11.111438] Modules linked in:
[   11.111451] CPU: 0 PID: 75 Comm: kworker/0:1H Not tainted 6.4.0-rc3-rt2-rtx-00081-gfd07f41ed6b4-dirty #1
[   11.111461] Hardware name: RTX AXG A113X Linux Platform Board (DT)
[   11.111469] Workqueue: kblockd blk_mq_run_work_fn
[   11.111492] Call trace:
[   11.111497]  dump_backtrace+0xac/0xe8
[   11.111510]  show_stack+0x18/0x28
[   11.111518]  dump_stack_lvl+0x48/0x60
[   11.111530]  dump_stack+0x18/0x24
[   11.111537]  __schedule_bug+0x4c/0x68
[   11.111548]  __schedule+0x80/0x574
[   11.111558]  schedule_loop+0x2c/0x50
[   11.111567]  schedule_rtlock+0x14/0x20
[   11.111576]  rtlock_slowlock_locked+0x468/0x730
[   11.111587]  rt_spin_lock+0x40/0x64
[   11.111596]  __wake_up_common_lock+0x5c/0xc4
[   11.111610]  __wake_up+0x18/0x24
[   11.111620]  mmc_blk_mq_req_done+0x68/0x138
[   11.111633]  mmc_request_done+0x104/0x118
[   11.111644]  meson_mmc_request_done+0x38/0x48
[   11.111654]  meson_mmc_irq+0x128/0x1f0
[   11.111663]  __handle_irq_event_percpu+0x70/0x114
[   11.111674]  handle_irq_event_percpu+0x18/0x4c
[   11.111683]  handle_irq_event+0x80/0xb8
[   11.111691]  handle_fasteoi_irq+0xa4/0x120
[   11.111704]  handle_irq_desc+0x20/0x38
[   11.111712]  generic_handle_domain_irq+0x1c/0x28
[   11.111721]  gic_handle_irq+0x8c/0xa8
[   11.111735]  call_on_irq_stack+0x24/0x4c
[   11.111746]  do_interrupt_handler+0x88/0x94
[   11.111757]  el1_interrupt+0x34/0x64
[   11.111769]  el1h_64_irq_handler+0x18/0x24
[   11.111779]  el1h_64_irq+0x64/0x68
[   11.111786]  __add_wait_queue+0x0/0x4c
[   11.111795]  mmc_blk_rw_wait+0x84/0x118
[   11.111804]  mmc_blk_mq_issue_rq+0x5c4/0x654
[   11.111814]  mmc_mq_queue_rq+0x194/0x214
[   11.111822]  blk_mq_dispatch_rq_list+0x3ac/0x528
[   11.111834]  __blk_mq_sched_dispatch_requests+0x340/0x4d0
[   11.111847]  blk_mq_sched_dispatch_requests+0x38/0x70
[   11.111858]  blk_mq_run_work_fn+0x3c/0x70
[   11.111865]  process_one_work+0x17c/0x1f0
[   11.111876]  worker_thread+0x1d4/0x26c
[   11.111885]  kthread+0xe4/0xf4
[   11.111894]  ret_from_fork+0x10/0x20

Fixes: 51c5d8447bd7 ("MMC: meson: initial support for GX platforms")
Cc: stable@vger.kernel.org
Signed-off-by: Martin Hundebøll &lt;martin@geanix.com&gt;
Link: https://lore.kernel.org/r/20230607082713.517157-1-martin@geanix.com
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
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<pre>
[ Upstream commit 3c40eb8145325b0f5b93b8a169146078cb2c49d6 ]

The call to mmc_request_done() can schedule, so it must not be called
from irq context. Wake the irq thread if it needs to be called, and let
its existing logic do its work.

Fixes the following kernel bug, which appears when running an RT patched
kernel on the AmLogic Meson AXG A113X SoC:
[   11.111407] BUG: scheduling while atomic: kworker/0:1H/75/0x00010001
[   11.111438] Modules linked in:
[   11.111451] CPU: 0 PID: 75 Comm: kworker/0:1H Not tainted 6.4.0-rc3-rt2-rtx-00081-gfd07f41ed6b4-dirty #1
[   11.111461] Hardware name: RTX AXG A113X Linux Platform Board (DT)
[   11.111469] Workqueue: kblockd blk_mq_run_work_fn
[   11.111492] Call trace:
[   11.111497]  dump_backtrace+0xac/0xe8
[   11.111510]  show_stack+0x18/0x28
[   11.111518]  dump_stack_lvl+0x48/0x60
[   11.111530]  dump_stack+0x18/0x24
[   11.111537]  __schedule_bug+0x4c/0x68
[   11.111548]  __schedule+0x80/0x574
[   11.111558]  schedule_loop+0x2c/0x50
[   11.111567]  schedule_rtlock+0x14/0x20
[   11.111576]  rtlock_slowlock_locked+0x468/0x730
[   11.111587]  rt_spin_lock+0x40/0x64
[   11.111596]  __wake_up_common_lock+0x5c/0xc4
[   11.111610]  __wake_up+0x18/0x24
[   11.111620]  mmc_blk_mq_req_done+0x68/0x138
[   11.111633]  mmc_request_done+0x104/0x118
[   11.111644]  meson_mmc_request_done+0x38/0x48
[   11.111654]  meson_mmc_irq+0x128/0x1f0
[   11.111663]  __handle_irq_event_percpu+0x70/0x114
[   11.111674]  handle_irq_event_percpu+0x18/0x4c
[   11.111683]  handle_irq_event+0x80/0xb8
[   11.111691]  handle_fasteoi_irq+0xa4/0x120
[   11.111704]  handle_irq_desc+0x20/0x38
[   11.111712]  generic_handle_domain_irq+0x1c/0x28
[   11.111721]  gic_handle_irq+0x8c/0xa8
[   11.111735]  call_on_irq_stack+0x24/0x4c
[   11.111746]  do_interrupt_handler+0x88/0x94
[   11.111757]  el1_interrupt+0x34/0x64
[   11.111769]  el1h_64_irq_handler+0x18/0x24
[   11.111779]  el1h_64_irq+0x64/0x68
[   11.111786]  __add_wait_queue+0x0/0x4c
[   11.111795]  mmc_blk_rw_wait+0x84/0x118
[   11.111804]  mmc_blk_mq_issue_rq+0x5c4/0x654
[   11.111814]  mmc_mq_queue_rq+0x194/0x214
[   11.111822]  blk_mq_dispatch_rq_list+0x3ac/0x528
[   11.111834]  __blk_mq_sched_dispatch_requests+0x340/0x4d0
[   11.111847]  blk_mq_sched_dispatch_requests+0x38/0x70
[   11.111858]  blk_mq_run_work_fn+0x3c/0x70
[   11.111865]  process_one_work+0x17c/0x1f0
[   11.111876]  worker_thread+0x1d4/0x26c
[   11.111885]  kthread+0xe4/0xf4
[   11.111894]  ret_from_fork+0x10/0x20

Fixes: 51c5d8447bd7 ("MMC: meson: initial support for GX platforms")
Cc: stable@vger.kernel.org
Signed-off-by: Martin Hundebøll &lt;martin@geanix.com&gt;
Link: https://lore.kernel.org/r/20230607082713.517157-1-martin@geanix.com
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>mmc: meson-gx: remove useless lock</title>
<updated>2023-08-30T14:31:45+00:00</updated>
<author>
<name>Jerome Brunet</name>
<email>jbrunet@baylibre.com</email>
</author>
<published>2018-12-06T15:18:26+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux-stable.git/commit/?id=d7aacfd2e388519434acf504a6b53099cc4da978'/>
<id>d7aacfd2e388519434acf504a6b53099cc4da978</id>
<content type='text'>
[ Upstream commit 83076d2268c72d123f3d1eaf186a9f56ec1b943a ]

The spinlock is only used within the irq handler so it does not
seem very useful.

Signed-off-by: Jerome Brunet &lt;jbrunet@baylibre.com&gt;
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Stable-dep-of: 3c40eb814532 ("mmc: meson-gx: remove redundant mmc_request_done() call from irq context")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 83076d2268c72d123f3d1eaf186a9f56ec1b943a ]

The spinlock is only used within the irq handler so it does not
seem very useful.

Signed-off-by: Jerome Brunet &lt;jbrunet@baylibre.com&gt;
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Stable-dep-of: 3c40eb814532 ("mmc: meson-gx: remove redundant mmc_request_done() call from irq context")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
</feed>
