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authorThomas Gleixner <tglx@linutronix.de>2010-12-16 13:06:35 +0000
committerGreg Kroah-Hartman <gregkh@suse.de>2010-12-16 13:14:32 -0800
commit35c64e5d13c3d7d8c4ad061ad5e20498b9160c24 (patch)
tree7fe8761e76c9dd07a785dacba0837af93603763d /drivers/xen
parent3f960dbb9dfe29ff283810624c4340c79fde87f5 (diff)
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drivers: serial: apbuart: Handle OF failures gracefully
The apbuart driver depends on OF and relies on everything being available. So if it's probed on a platform which has OF support, but no device tree is available it crashes. Triggered by the upcoming x86 OF support in randconfig testing. Further it's inconsistent vs. the probing and exiting from the of_match loop. Make it robust and consistent: - check the availablility of OF nodes before dereferencing - return -ENODEV when the device tree lookup fails - return -ENODEV when no uart port configuration is found - return -ENODEV when invalid uart port configuration is found Remove the enum_done check while at it. Driver init functions are only called once. Remove the pointless vendor and device queries as well. Reported-by: Ingo Molnar <mingo.elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Kristoffer Glembo <kristoffer@gaisler.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/xen')
0 files changed, 0 insertions, 0 deletions
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