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In case of error, the function devm_platform_ioremap_resource()
returns ERR_PTR() and never returns NULL. The NULL test in the
return value check should be replaced with IS_ERR().
Fixes: a1d1e0e3d80a ("pinctrl: nuvoton: Add driver for WPCM450")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Link: https://lore.kernel.org/r/20220317065851.495394-1-zhangjialin11@huawei.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The > WPCM450_NUM_BANKS should be >= or it leads to an out of bounds
access on the next line.
Fixes: a1d1e0e3d80a ("pinctrl: nuvoton: Add driver for WPCM450")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Link: https://lore.kernel.org/r/20220318071131.GA29472@kili
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Sparse complains:
drivers/pinctrl/nuvoton/pinctrl-wpcm450.c:626:9:
sparse: sparse: obsolete array initializer, use C99 syntax
This is because no equal sign is between the array index
and the assignments, in the macro.
Fix it up.
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This driver is based on the one for NPCM7xx, because the WPCM450 is a
predecessor of those SoCs. Notable differences:
- On WPCM450, the GPIO registers are not organized in multiple banks,
but rather placed continually into the same register block. This
affects how register offsets are computed.
- Pinmux nodes can explicitly select GPIO mode, whereas in the npcm7xx
driver, this happens automatically when a GPIO is requested.
Some functionality implemented in the hardware was (for now) left unused
in the driver, specifically blinking and pull-up/down.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/20220129115228.2257310-6-j.neuschaefer@gmx.net
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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