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linux-brain/drivers/phy/allwinner
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Colin Ian King 1d08f59081 phy: sun4i-usb: fix dereference of pointer phy0 before it is null checked 
[ Upstream commit 38b1927e5bf9bcad4a2e33189ef1c5569f9599ba ]

Currently pointer phy0 is being dereferenced via the assignment of
phy on the call to phy_get_drvdata before phy0 is null checked, this
can lead to a null pointer dereference. Fix this by performing the
null check on phy0 before the call to phy_get_drvdata. Also replace
the phy0 == NULL check with the more usual !phy0 idiom.

Addresses-Coverity: ("Dereference before null check")
Fixes: e6f32efb1b ("phy: sun4i-usb: Make sure to disable PHY0 passby for peripheral mode")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200625124428.83564-1-colin.king@canonical.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2020-07-22 09:33:01 +02:00
..
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
phy-sun4i-usb.c phy: sun4i-usb: fix dereference of pointer phy0 before it is null checked 2020-07-22 09:33:01 +02:00
phy-sun6i-mipi-dphy.c phy: Move Allwinner A31 D-PHY driver to drivers/phy/ 2019-02-07 09:34:49 +01:00
phy-sun9i-usb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00