linux.git/drivers/net/wireless/cisco, branch v5.10

airo: switch from 'pci_' to 'dma_' API

2020-09-16T05:56:43+00:00

The wrappers in include/linux/pci-dma-compat.h should go away.

The patch has been generated with the coccinelle script below and has been
hand modified to replace GFP_ with a correct flag.
It has been compile tested.

When memory is allocated in 'mpi_map_card()' GFP_KERNEL can be used because
this function is called from a probe or a module_init() function and no
spinlock is taken in the between.

The call chains are:
  airo_init_module				module_init function in 'airo.c'
or
  airo_probe				.probe function in 'airo_cs.c'
    --> airo_config

followed in both cases by:
      --> init_airo_card
        --> _init_airo_card
          --> mpi_map_card

@@
@@
-    PCI_DMA_BIDIRECTIONAL
+    DMA_BIDIRECTIONAL

@@
@@
-    PCI_DMA_TODEVICE
+    DMA_TO_DEVICE

@@
@@
-    PCI_DMA_FROMDEVICE
+    DMA_FROM_DEVICE

@@
@@
-    PCI_DMA_NONE
+    DMA_NONE

@@
expression e1, e2, e3;
@@
-    pci_alloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3;
@@
-    pci_zalloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3, e4;
@@
-    pci_free_consistent(e1, e2, e3, e4)
+    dma_free_coherent(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_single(e1, e2, e3, e4)
+    dma_map_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_single(e1, e2, e3, e4)
+    dma_unmap_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4, e5;
@@
-    pci_map_page(e1, e2, e3, e4, e5)
+    dma_map_page(&e1->dev, e2, e3, e4, e5)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_page(e1, e2, e3, e4)
+    dma_unmap_page(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_sg(e1, e2, e3, e4)
+    dma_map_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_sg(e1, e2, e3, e4)
+    dma_unmap_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_cpu(e1, e2, e3, e4)
+    dma_sync_single_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_device(e1, e2, e3, e4)
+    dma_sync_single_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_cpu(e1, e2, e3, e4)
+    dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_device(e1, e2, e3, e4)
+    dma_sync_sg_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2;
@@
-    pci_dma_mapping_error(e1, e2)
+    dma_mapping_error(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_dma_mask(e1, e2)
+    dma_set_mask(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_consistent_dma_mask(e1, e2)
+    dma_set_coherent_mask(&e1->dev, e2)

Signed-off-by: Christophe JAILLET 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/20200907201942.321568-1-christophe.jaillet@wanadoo.fr

airo: Fix a myriad of coding style issues

2020-08-27T12:15:26+00:00

- Ensure spaces appear after {for, if, while, etc}
 - Ensure spaces to not appear after '('
 - Ensure spaces to not appear before ')'
 - Ensure spaces appear between ')' and '{'
 - Ensure spaces appear after ','
 - Ensure spaces do not appear before ','
 - Ensure spaces appear either side of '='
 - Ensure '{'s which open functions are on a new line
 - Remove trailing whitespace

There are still a whole host of issues with this file, but this
patch certainly breaks the back of them.

Cc: Kalle Valo 
Cc: "David S. Miller" 
Cc: Jakub Kicinski 
Cc: Benjamin Reed 
Cc: Javier Achirica 
Cc: Jean Tourrilhes 
Cc: Fabrice Bellet 
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/20200814113933.1903438-13-lee.jones@linaro.org

airo: Place brackets around empty statement

2020-08-27T12:15:24+00:00

Fixes the following W=1 kernel build warning(s):

 drivers/net/wireless/cisco/airo.c: In function ‘airo_init_module’:
 drivers/net/wireless/cisco/airo.c:5663:21: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]

Cc: Kalle Valo 
Cc: "David S. Miller" 
Cc: Jakub Kicinski 
Cc: Benjamin Reed 
Cc: Javier Achirica 
Cc: Jean Tourrilhes 
Cc: Fabrice Bellet 
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/20200814113933.1903438-12-lee.jones@linaro.org

airo: use generic power management

2020-08-02T15:24:37+00:00

Drivers using legacy power management .suspen()/.resume() callbacks
have to manage PCI states and device's PM states themselves. They also
need to take care of standard configuration registers.

Switch to generic power management framework using a single
"struct dev_pm_ops" variable to take the unnecessary load from the driver.
This also avoids the need for the driver to directly call most of the PCI
helper functions and device power state control functions, as through
the generic framework PCI Core takes care of the necessary operations,
and drivers are required to do only device-specific jobs.

Signed-off-by: Vaibhav Gupta 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/20200728114128.1218310-1-vaibhavgupta40@gmail.com

wireless: Fix trivial spelling

2020-07-15T16:48:14+00:00

The word 'descriptor' is misspelled throughout the tree.

Fix it up accordingly:
    decriptors -> descriptors

Signed-off-by: Kieran Bingham 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/20200715124839.252822-5-kieran.bingham+renesas@ideasonboard.com

airo: use set_current_state macro

2020-07-15T10:40:21+00:00

Use set_current_state macro instead of current->state = TASK_RUNNING.

Signed-off-by: Xu Wang 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/20200702015701.8606-1-vulab@iscas.ac.cn

treewide: replace '---help---' in Kconfig files with 'help'

2020-06-13T16:57:21+00:00

Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.

This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.

There are a variety of indentation styles found.

  a) 4 spaces + '---help---'
  b) 7 spaces + '---help---'
  c) 8 spaces + '---help---'
  d) 1 space + 1 tab + '---help---'
  e) 1 tab + '---help---'    (correct indentation)
  f) 1 tab + 1 space + '---help---'
  g) 1 tab + 2 spaces + '---help---'

In order to convert all of them to 1 tab + 'help', I ran the
following commend:

  $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'

Signed-off-by: Masahiro Yamada

airo: Fix read overflows sending packets

2020-05-29T17:40:22+00:00

The problem is that we always copy a minimum of ETH_ZLEN (60) bytes from
skb->data even when skb->len is less than ETH_ZLEN so it leads to a read
overflow.

The fix is to pad skb->data to at least ETH_ZLEN bytes.

Cc: 
Reported-by: Hu Jiahui 
Signed-off-by: Dan Carpenter 
Reviewed-by: Eric Dumazet 
Signed-off-by: Kalle Valo 
Link: https://lore.kernel.org/r/20200527184830.GA1164846@mwanda

proc: convert everything to "struct proc_ops"

2020-02-04T03:05:26+00:00

The most notable change is DEFINE_SHOW_ATTRIBUTE macro split in
seq_file.h.

Conversion rule is:

	llseek		=> proc_lseek
	unlocked_ioctl	=> proc_ioctl

	xxx		=> proc_xxx

	delete ".owner = THIS_MODULE" line

[akpm@linux-foundation.org: fix drivers/isdn/capi/kcapi_proc.c]
[sfr@canb.auug.org.au: fix kernel/sched/psi.c]
  Link: http://lkml.kernel.org/r/20200122180545.36222f50@canb.auug.org.au
Link: http://lkml.kernel.org/r/20191225172546.GB13378@avx2
Signed-off-by: Alexey Dobriyan 
Signed-off-by: Stephen Rothwell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

airo: Add missing CAP_NET_ADMIN check in AIROOLDIOCTL/SIOCDEVPRIVATE

2020-01-23T10:01:13+00:00

The driver for Cisco Aironet 4500 and 4800 series cards (airo.c),
implements AIROOLDIOCTL/SIOCDEVPRIVATE in airo_ioctl().

The ioctl handler copies an aironet_ioctl struct from userspace, which
includes a command. Some of the commands are handled in readrids(),
where the user controlled command is converted into a driver-internal
value called "ridcode".

There are two command values, AIROGWEPKTMP and AIROGWEPKNV, which
correspond to ridcode values of RID_WEP_TEMP and RID_WEP_PERM
respectively. These commands both have checks that the user has
CAP_NET_ADMIN, with the comment that "Only super-user can read WEP
keys", otherwise they return -EPERM.

However there is another command value, AIRORRID, that lets the user
specify the ridcode value directly, with no other checks. This means
the user can bypass the CAP_NET_ADMIN check on AIROGWEPKTMP and
AIROGWEPKNV.

Fix it by moving the CAP_NET_ADMIN check out of the command handling
and instead do it later based on the ridcode. That way regardless of
whether the ridcode is set via AIROGWEPKTMP or AIROGWEPKNV, or passed
in using AIRORID, we always do the CAP_NET_ADMIN check.

Found by Ilja by code inspection, not tested as I don't have the
required hardware.

Reported-by: Ilja Van Sprundel 
Signed-off-by: Michael Ellerman 
Signed-off-by: David S. Miller