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Valentina Goncharenko 3d3b30718a net: encx24j600: Fix invalid logic in reading of MISTAT register

[ Upstream commit 25f427ac7b8d89b0259f86c0c6407b329df742b2 ]

A loop for reading MISTAT register continues while regmap_read() fails
and (mistat & BUSY), but if regmap_read() fails a value of mistat is
undefined.

The patch proposes to check for BUSY flag only when regmap_read()
succeed. Compile test only.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: d70e53262f5c ("net: Microchip encx24j600 driver")
Signed-off-by: Valentina Goncharenko <goncharenko.vp@ispras.ru>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-12-14 11:32:02 +01:00

enc28j60_hw.h

…

enc28j60.c

…

encx24j600_hw.h

net: encx24j600: check error in devm_regmap_init_encx24j600

2021-10-20 11:45:04 +02:00

encx24j600-regmap.c

net: encx24j600: Fix invalid logic in reading of MISTAT register

2022-12-14 11:32:02 +01:00

encx24j600.c