linux-stable.git/arch/arm, branch v3.18.28

ARM: 8519/1: ICST: try other dividends than 1

2016-03-04T15:18:40+00:00

[ Upstream commit e972c37459c813190461dabfeaac228e00aae259 ]

Since the dawn of time the ICST code has only supported divide
by one or hang in an eternal loop. Luckily we were always dividing
by one because the reference frequency for the systems using
the ICSTs is 24MHz and the [min,max] values for the PLL input
if [10,320] MHz for ICST307 and [6,200] for ICST525, so the loop
will always terminate immediately without assigning any divisor
for the reference frequency.

But for the code to make sense, let's insert the missing i++

Reported-by: David Binderman 
Cc: stable@vger.kernel.org
Signed-off-by: Linus Walleij 
Signed-off-by: Russell King 
Signed-off-by: Sasha Levin

ARM: 8517/1: ICST: avoid arithmetic overflow in icst_hz()

2016-03-04T15:18:38+00:00

[ Upstream commit 5070fb14a0154f075c8b418e5bc58a620ae85a45 ]

When trying to set the ICST 307 clock to 25174000 Hz I ran into
this arithmetic error: the icst_hz_to_vco() correctly figure out
DIVIDE=2, RDW=100 and VDW=99 yielding a frequency of
25174000 Hz out of the VCO. (I replicated the icst_hz() function
in a spreadsheet to verify this.)

However, when I called icst_hz() on these VCO settings it would
instead return 4122709 Hz. This causes an error in the common
clock driver for ICST as the common clock framework will call
.round_rate() on the clock which will utilize icst_hz_to_vco()
followed by icst_hz() suggesting the erroneous frequency, and
then the clock gets set to this.

The error did not manifest in the old clock framework since
this high frequency was only used by the CLCD, which calls
clk_set_rate() without first calling clk_round_rate() and since
the old clock framework would not call clk_round_rate() before
setting the frequency, the correct values propagated into
the VCO.

After some experimenting I figured out that it was due to a simple
arithmetic overflow: the divisor for 24Mhz reference frequency
as reference becomes 24000000*2*(99+8)=0x132212400 and the "1"
in bit 32 overflows and is lost.

But introducing an explicit 64-by-32 bit do_div() and casting
the divisor into (u64) we get the right frequency back, and the
right frequency gets set.

Tested on the ARM Versatile.

Cc: stable@vger.kernel.org
Cc: linux-clk@vger.kernel.org
Cc: Pawel Moll 
Signed-off-by: Linus Walleij 
Signed-off-by: Russell King 
Signed-off-by: Sasha Levin

net: filter: make JITs zero A for SKF_AD_ALU_XOR_X

2016-02-15T20:42:43+00:00

[ Upstream commit 55795ef5469290f89f04e12e662ded604909e462 ]

The SKF_AD_ALU_XOR_X ancillary is not like the other ancillary data
instructions since it XORs A with X while all the others replace A with
some loaded value.  All the BPF JITs fail to clear A if this is used as
the first instruction in a filter.  This was found using american fuzzy
lop.

Add a helper to determine if A needs to be cleared given the first
instruction in a filter, and use this in the JITs.  Except for ARM, the
rest have only been compile-tested.

Fixes: 3480593131e0 ("net: filter: get rid of BPF_S_* enum")
Signed-off-by: Rabin Vincent 
Acked-by: Daniel Borkmann 
Acked-by: Alexei Starovoitov 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

ARM: nomadik: set up MCDATDIR2

2016-02-15T20:42:40+00:00

[ Upstream commit 43c4034963d6e838d971cbe59bfe84ae6e8370e6 ]

This extra data line for high-speed MMC transfers was unrouted,
set it up properly in the dtsi file.

Signed-off-by: Linus Walleij 
Signed-off-by: Sasha Levin

ARM: dts: at91: sama5d4: fix instance id of DBGU

2016-02-15T20:42:35+00:00

[ Upstream commit 929e883f2bfdf68d4bd3aec43912e956417005c7 ]

Change instance id of DBGU to 45.

Signed-off-by: Mohamed Jamsheeth Hajanajubudeen 
Fixes: 7c661394c56c ("ARM: at91: dt: add device tree file for SAMA5D4 SoC")
Cc: stable@vger.kernel.org   # 3.18+
Signed-off-by: Nicolas Ferre 
Signed-off-by: Sasha Levin

ARM: orion: Fix DSA platform device after mvmdio conversion

2015-12-14T17:17:31+00:00

[ Upstream commit d836ace65ee98d7079bc3c5afdbcc0e27dca20a3 ]

DSA expects the host_dev pointer to be the device structure associated
with the MDIO bus controller driver. First commit breaking that was
c3a07134e6aa ("mv643xx_eth: convert to use the Marvell Orion MDIO
driver"), and then, it got completely under the radar for a while.

Reported-by: Frans van de Wiel 
Fixes: c3a07134e6aa ("mv643xx_eth: convert to use the Marvell Orion MDIO driver")
CC: stable@vger.kernel.org
Signed-off-by: Florian Fainelli 
Signed-off-by: Gregory CLEMENT 
Signed-off-by: Sasha Levin

ARM: OMAP2+: DRA7: clockdomain: change l4per2_7xx_clkdm to SW_WKUP

2015-10-28T02:14:52+00:00

[ Upstream commit b9e23f321940d2db2c9def8ff723b8464fb86343 ]

Legacy IPs like PWMSS, present under l4per2_7xx_clkdm, cannot support
smart-idle when its clock domain is in HW_AUTO on DRA7 SoCs. Hence,
program clock domain to SW_WKUP.

Signed-off-by: Vignesh R 
Acked-by: Tero Kristo 
Reviewed-by: Paul Walmsley 
Signed-off-by: Paul Walmsley 
Cc: 
Signed-off-by: Sasha Levin

dts: imx25: fix sd card gpio polarity specified in device tree

2015-10-28T02:13:59+00:00

[ Upstream commit cf75eb15be2bdd054a76aeef6458beaa4a6ab770 ]

cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().

Signed-off-by: Dong Aisheng 
Acked-by: Shawn Guo 
Signed-off-by: Ulf Hansson 
Signed-off-by: Sasha Levin

dts: imx53: fix sd card gpio polarity specified in device tree

2015-10-28T02:13:58+00:00

[ Upstream commit 94d76946859b4bcfa0da373357f14feda2af0622 ]

cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().

Signed-off-by: Dong Aisheng 
Acked-by: Shawn Guo 
Signed-off-by: Ulf Hansson 
Signed-off-by: Sasha Levin

dts: imx51: fix sd card gpio polarity specified in device tree

2015-10-28T02:13:57+00:00

[ Upstream commit aca45c0e95dad1c4ba4d38da192756b0e10cbbbd ]

cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().

Signed-off-by: Dong Aisheng 
Acked-by: Shawn Guo 
Signed-off-by: Ulf Hansson 
Signed-off-by: Sasha Levin