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uhci: Fix null pointer dereference.

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Found by: Coverity scan.
This commit is contained in:
Vladimir Serbinenko 2015-01-24 20:38:12 +01:00
parent 3661261fe1
commit 9ff9d5a54e
1 changed files with 1 additions and 3 deletions
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4
grub-core/bus/usb/uhci.c
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@ -625,9 +625,7 @@ grub_uhci_check_transfer (grub_usb_controller_t dev,
return GRUB_USB_ERR_NONE;
}
grub_dprintf ("uhci", "t status=0x%02x\n", errtd->ctrl_status);
if (!(errtd->ctrl_status & (1 << 23)))
if (errtd && !(errtd->ctrl_status & (1 << 23)))
{
grub_usb_err_t err = GRUB_USB_ERR_NONE;