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| author | Linus Walleij <[email protected]> | 2015-12-10 14:55:29 +0000 |
|---|---|---|
| committer | Linus Walleij <[email protected]> | 2015-12-17 14:47:38 +0000 |
| commit | 67a76aafec00db46fbd65d7d17a1cde1adde70c5 (patch) | |
| tree | 0f1373bf6ffc834c42738d80d79db00616f599ea /drivers/fpga/fpga-mgr.c | |
| parent | gpio: ath79: Fix the logic to clear offset bit of AR71XX_GPIO_REG_OE register (diff) | |
| download | kernel-67a76aafec00db46fbd65d7d17a1cde1adde70c5.tar.gz kernel-67a76aafec00db46fbd65d7d17a1cde1adde70c5.zip | |
gpio: generic: clamp values from bgpio_get_set()
The bgpio_get_set() call should return a value clamped to [0,1],
the current code will return a negative value if reading
bit 31, which turns the value negative as this is a signed value
and thus gets interpreted as an error by the gpiolib core.
Found on the gpio-mxc but applies to any MMIO driver.
Cc: [email protected] # 4.3+
Cc: [email protected]
Cc: Vladimir Zapolskiy <[email protected]>
Fixes: e20538b82f1f ("gpio: Propagate errors from chip->get()")
Reported-by: Clemens Gruber <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
Diffstat (limited to 'drivers/fpga/fpga-mgr.c')
0 files changed, 0 insertions, 0 deletions