mirror of https://gitee.com/openkylin/linux.git
650f7b3b2f
Some versions of pSeries firmware fail to set up a dma-window property for PCI slots that are unoccupied. As a result, the loop searching for this propery, in pci_dma_dev_setup_pSeriesLP(), can run to the end, resulting in a NULL pointer dereference later in the routine. This patch prevents the crash, and prints a warning message. This is theoretically a rare error, as it occurs on what is hopefully just beta levels of firmware. But just in case this firmware escapes into the wild, this patch will avoid the crash. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> |
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| mm | ||
| oprofile | ||
| platforms | ||
| sysdev | ||
| xmon | ||
| .gitignore | ||
| Kconfig | ||
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| Makefile | ||