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usb: cdnsp: Fix segmentation fault in cdns_lost_power function

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CDNSP driver read not initialized cdns->otg_v0_regs
which lead to segmentation fault. Patch fixes this issue.

Fixes: 2cf2581cd2 ("usb: cdns3: add power lost support for system resume")
cc: <stable@vger.kernel.org>
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Link: https://lore.kernel.org/r/20220111090737.10345-1-pawell@gli-login.cadence.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pawel Laszczak 2022-01-11 10:07:37 +01:00 committed by Greg Kroah-Hartman
parent ac55d16385
commit 79aa3e19fe
1 changed files with 3 additions and 3 deletions
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6
drivers/usb/cdns3/drd.c
View File

@ -483,11 +483,11 @@ int cdns_drd_exit(struct cdns *cdns)
/* Indicate the cdns3 core was power lost before */
bool cdns_power_is_lost(struct cdns *cdns)
{
if (cdns->version == CDNS3_CONTROLLER_V1) {
if (!(readl(&cdns->otg_v1_regs->simulate) & BIT(0)))
if (cdns->version == CDNS3_CONTROLLER_V0) {
if (!(readl(&cdns->otg_v0_regs->simulate) & BIT(0)))
return true;
} else {
if (!(readl(&cdns->otg_v0_regs->simulate) & BIT(0)))
if (!(readl(&cdns->otg_v1_regs->simulate) & BIT(0)))
return true;
}
return false;