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authorThadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>2012-01-11 09:09:58 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-02-14 15:01:39 +1100
commit778a785f02ad846446e91dab49331bd7d853c514 (patch)
tree4f8969fe08df41ced83f44ec9dd459ab10e72d69 /arch/powerpc/include
parent444080d13d05dc38d07dd3bf751d38bce7ab7c72 (diff)
powerpc/pseries/eeh: Fix crash when error happens during device probe
EEH may happen during a PCI driver probe. If the driver is trying to access some register in a loop, the EEH code will try to print the driver name. But the driver pointer in struct pci_dev is not set until probe returns successfully. Use a function to test if the device and the driver pointer is NULL before accessing the driver's name. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include')
-rw-r--r--arch/powerpc/include/asm/ppc-pci.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/ppc-pci.h b/arch/powerpc/include/asm/ppc-pci.h
index 43268f15004..6d422979eba 100644
--- a/arch/powerpc/include/asm/ppc-pci.h
+++ b/arch/powerpc/include/asm/ppc-pci.h
@@ -142,6 +142,11 @@ static inline const char *eeh_pci_name(struct pci_dev *pdev)
return pdev ? pci_name(pdev) : "<null>";
}
+static inline const char *eeh_driver_name(struct pci_dev *pdev)
+{
+ return (pdev && pdev->driver) ? pdev->driver->name : "<null>";
+}
+
#endif /* CONFIG_EEH */
#else /* CONFIG_PCI */