linux.git/drivers/i2c, branch v5.12.5

i2c: mediatek: Fix send master code at more than 1MHz

2021-05-19T08:56:44+00:00

commit 63ce8e3df8f6deca2da52eaf064751ad4018b46e upstream.

There are some omissions in the previous patch about replacing
I2C_MAX_FAST_MODE__FREQ with I2C_MAX_FAST_MODE_PLUS_FREQ and
need to fix it.

Fixes: b44658e755b5("i2c: mediatek: Send i2c master code at more than 1MHz")
Signed-off-by: Qii Wang 
Signed-off-by: Wolfram Sang 
Signed-off-by: Greg Kroah-Hartman

i2c: i801: Add support for Intel Alder Lake PCH-M

2021-05-19T08:56:17+00:00

[ Upstream commit 8f51c1763ae98bb63fc04627ceae383aa0e8ff7b ]

Add PCI ID of SMBus controller on Intel Alder Lake PCH-M.

Signed-off-by: Jarkko Nikula 
Signed-off-by: Wolfram Sang 
Signed-off-by: Sasha Levin

i2c: imx: Fix PM reference leak in i2c_imx_reg_slave()

2021-05-19T08:56:15+00:00

[ Upstream commit c4b1fcc310e655fa8414696c38a84d36c00684c8 ]

pm_runtime_get_sync() will increment the PM reference count even on
failure. Forgetting to put the reference again will result in a leak.

Replace it with pm_runtime_resume_and_get() to keep the usage counter
balanced.

Reported-by: Hulk Robot 
Signed-off-by: Ye Weihua 
Signed-off-by: Wolfram Sang 
Signed-off-by: Sasha Levin

i2c: bail out early when RDWR parameters are wrong

2021-05-19T08:56:11+00:00

[ Upstream commit 71581562ee36032d2d574a9b23ad4af6d6a64cf7 ]

The buggy parameters currently get caught later, but emit a noisy WARN.
Userspace should not be able to trigger this, so add similar checks much
earlier. Also avoids some unneeded code paths, of course. Apply kernel
coding stlye to a comment while here.

Reported-by: syzbot+ffb0b3ffa6cfbc7d7b3f@syzkaller.appspotmail.com
Tested-by: syzbot+ffb0b3ffa6cfbc7d7b3f@syzkaller.appspotmail.com
Signed-off-by: Wolfram Sang 
Signed-off-by: Wolfram Sang 
Signed-off-by: Sasha Levin

i2c: mediatek: Fix wrong dma sync flag

2021-05-14T08:52:59+00:00

[ Upstream commit 3186b880447ad3cc9b6487fa626a71d64b831524 ]

The right flag is apdma_sync when apdma remove hand-shake signel.

Fixes: 05f6f7271a38 ("i2c: mediatek: Fix apdma and i2c hand-shake timeout")
Signed-off-by: Qii Wang 
Signed-off-by: Wolfram Sang 
Signed-off-by: Sasha Levin

i2c: sh7760: fix IRQ error path

2021-05-14T08:52:59+00:00

[ Upstream commit 92dfb27240fea2776f61c5422472cb6defca7767 ]

While adding the invalid IRQ check after calling platform_get_irq(),
I managed to overlook that the driver has a complex error path in its
probe() method, thus a simple *return* couldn't be used.  Use a proper
*goto* instead!

Fixes: e5b2e3e74201 ("i2c: sh7760: add IRQ check")
Signed-off-by: Sergey Shtylyov 
Signed-off-by: Wolfram Sang 
Signed-off-by: Sasha Levin

i2c: sh7760: add IRQ check

2021-05-14T08:52:56+00:00

[ Upstream commit e5b2e3e742015dd2aa6bc7bcef2cb59b2de1221c ]

The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to devm_request_irq() (which
takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding
an original error code.  Stop calling devm_request_irq() with invalid
IRQ #s.

Fixes: a26c20b1fa6d ("i2c: Renesas SH7760 I2C master driver")
Signed-off-by: Sergey Shtylyov 
Signed-off-by: Wolfram Sang 
Signed-off-by: Sasha Levin

i2c: rcar: add IRQ check

2021-05-14T08:52:56+00:00

[ Upstream commit 147178cf03a6dcb337e703d4dacd008683022a58 ]

The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to devm_request_irq() (which
takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding
an original error code.  Stop calling devm_request_irq() with the
invalid IRQ #s.

Fixes: 6ccbe607132b ("i2c: add Renesas R-Car I2C driver")
Signed-off-by: Sergey Shtylyov 
Reviewed-by: Geert Uytterhoeven 
Signed-off-by: Wolfram Sang 
Signed-off-by: Sasha Levin

i2c: mlxbf: add IRQ check

2021-05-14T08:52:56+00:00

[ Upstream commit 0d3bf53e897dce943b98d975bbde77156af6cd81 ]

The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to devm_request_irq() (which
takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding
an original error code.  Stop calling devm_request_irq() with invalid
IRQ #s.

Fixes: b5b5b32081cd ("i2c: mlxbf: I2C SMBus driver for Mellanox BlueField SoC")
Signed-off-by: Sergey Shtylyov 
Signed-off-by: Wolfram Sang 
Signed-off-by: Sasha Levin

i2c: jz4780: add IRQ check

2021-05-14T08:52:56+00:00

[ Upstream commit c5e5f7a8d931fb4beba245bdbc94734175fda9de ]

The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to devm_request_irq() (which
takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding
an original error code.  Stop calling devm_request_irq() with invalid
IRQ #s.

Fixes: ba92222ed63a ("i2c: jz4780: Add i2c bus controller driver for Ingenic JZ4780")
Signed-off-by: Sergey Shtylyov 
Signed-off-by: Wolfram Sang 
Signed-off-by: Sasha Levin