usb: cdnsp: Fix segmentation fault in cdns_lost_power function
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:
Родитель
ac55d16385
Коммит
79aa3e19fe
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@ -483,11 +483,11 @@ int cdns_drd_exit(struct cdns *cdns)
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/* Indicate the cdns3 core was power lost before */
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bool cdns_power_is_lost(struct cdns *cdns)
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{
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if (cdns->version == CDNS3_CONTROLLER_V1) {
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if (!(readl(&cdns->otg_v1_regs->simulate) & BIT(0)))
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if (cdns->version == CDNS3_CONTROLLER_V0) {
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if (!(readl(&cdns->otg_v0_regs->simulate) & BIT(0)))
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return true;
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} else {
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if (!(readl(&cdns->otg_v0_regs->simulate) & BIT(0)))
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if (!(readl(&cdns->otg_v1_regs->simulate) & BIT(0)))
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return true;
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}
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return false;
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