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| author | Leonard Crestez <leonard.crestez@nxp.com> | 2019-12-10 22:49:28 +0100 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2019-12-12 03:44:28 +0100 |
| commit | 7947e3238b64c00c396e6f5738f94c4d653bc6a2 (patch) | |
| tree | 2433462645871c395bf399bfc0359f9e0f43c014 /arch/arm/mach-imx/devices-imx35.h | |
| parent | ARM: imx_v6_v7_defconfig: Explicitly restore CONFIG_DEBUG_FS (diff) | |
| download | linux-7947e3238b64c00c396e6f5738f94c4d653bc6a2.tar.xz linux-7947e3238b64c00c396e6f5738f94c4d653bc6a2.zip | |
ARM: imx: Fix boot crash if ocotp is not found
The imx_soc_device_init functions tries to fetch the ocotp regmap in
order to soc serial number. If regmap fetch fails then a message is
printed but regmap_read is called anyway and the system crashes.
Failing to lookup ocotp regmap shouldn't be a fatal boot error so check
that the pointer is valid.
Only side-effect of ocotp lookup failure now is that serial number will
be reported as all-zeros which is acceptable.
Cc: stable@vger.kernel.org
Fixes: 8267ff89b713 ("ARM: imx: Add serial number support for i.MX6/7 SoCs")
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Tested-by: Christoph Niedermaier <cniedermaier@dh-electronics.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm/mach-imx/devices-imx35.h')
0 files changed, 0 insertions, 0 deletions