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xhci: host: potential NULL dereference in xhci_generic_plat_probe()

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It's possible to exit the loop with "sysdev" set to NULL.  In that
case we should use "&pdev->dev".

Fixes: ec5499d338 ("xhci: split out rcar/rz support from xhci-plat.c")
Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/Y+T4kTcJwRwxNHJq@kili
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter 2023-02-09 16:43:45 +03:00 committed by Greg Kroah-Hartman
parent c4a07e264d
commit 77191db5ba
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/host/xhci-plat.c
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@ -368,6 +368,9 @@ static int xhci_generic_plat_probe(struct platform_device *pdev)
#endif
}
if (!sysdev)
sysdev = &pdev->dev;
if (WARN_ON(!sysdev->dma_mask)) {
/* Platform did not initialize dma_mask */
ret = dma_coerce_mask_and_coherent(sysdev, DMA_BIT_MASK(64));