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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2011-08-26 12:20:59 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2011-11-21 14:31:20 -0800
commit03ff90c0f9c9ea4ab0840ac21a393da859784d4d (patch)
treee849164b2cfa2464a583f68e94e0f3891232fe2a /arch/x86
parent987ccebc15b3f1256dbcdfbb81ad542d1e2ad6a8 (diff)
sfi: table irq 0xFF means 'no interrupt'
commit a94cc4e6c0a26a7c8f79a432ab2c89534aa674d5 upstream. According to the SFI specification irq number 0xFF means device has no interrupt or interrupt attached via GPIO. Currently, we don't handle this special case and set irq field in *_board_info structs to 255. It leads to confusion in some drivers. Accelerometer driver tries to register interrupt 255, fails and prints "Cannot get IRQ" to dmesg. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/platform/mrst/mrst.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/platform/mrst/mrst.c b/arch/x86/platform/mrst/mrst.c
index 7000e74b3087..58425adc22c6 100644
--- a/arch/x86/platform/mrst/mrst.c
+++ b/arch/x86/platform/mrst/mrst.c
@@ -689,7 +689,9 @@ static int __init sfi_parse_devs(struct sfi_table_header *table)
irq_attr.trigger = 1;
irq_attr.polarity = 1;
io_apic_set_pci_routing(NULL, pentry->irq, &irq_attr);
- }
+ } else
+ pentry->irq = 0; /* No irq */
+
switch (pentry->type) {
case SFI_DEV_TYPE_IPC:
/* ID as IRQ is a hack that will go away */