tree 2db42b1fa7c6bcf138c810316736dfcc2bcb67cb
parent c977426db644ba476938125597947979e8aba725
author Sergey Shtylyov <s.shtylyov@omprussia.ru> 1618085675 +0300
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1620978637 +0200

i2c: cadence: add IRQ check

[ Upstream commit 5581c2c5d02bc63a0edb53e061c8e97cd490646e ]

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: df8eb5691c48 ("i2c: Add driver for Cadence I2C controller")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>