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authorThomas Bogendoerfer <tsbogend@alpha.franken.de>2013-07-30 04:02:16 +0400
committerHelge Deller <deller@gmx.de>2013-08-01 01:42:32 +0400
commitdd5e6d6a3db09b16b7c222943977865eead88cc3 (patch)
treeb026782954cdc18bf52c82940a4bb34a076d3cdc /drivers/tty
parent5a0ce2dc218ea9a6e659dcc5a4827975cb13104f (diff)
downloadlinux-dd5e6d6a3db09b16b7c222943977865eead88cc3.tar.xz
parisc: Fix interrupt routing for C8000 serial ports
We can't use dev->mod_index for selecting the interrupt routing entry, because it's not an index into interrupt routing table. It will be even wrong on a machine with 2 CPUs (4 cores). But all needed information is contained in the PAT entries for the serial ports. mod[0] contains the iosapic address and mod_info has some indications for the interrupt input (at least it looks like it). This patch implements the searching for the right iosapic and uses this interrupt input information. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: <stable@vger.kernel.org> # 3.10 Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/8250/8250_gsc.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/tty/serial/8250/8250_gsc.c b/drivers/tty/serial/8250/8250_gsc.c
index bb91b4713ebd..2e3ea1a70d7b 100644
--- a/drivers/tty/serial/8250/8250_gsc.c
+++ b/drivers/tty/serial/8250/8250_gsc.c
@@ -31,9 +31,8 @@ static int __init serial_init_chip(struct parisc_device *dev)
int err;
#ifdef CONFIG_64BIT
- extern int iosapic_serial_irq(int cellnum);
if (!dev->irq && (dev->id.sversion == 0xad))
- dev->irq = iosapic_serial_irq(dev->mod_index-1);
+ dev->irq = iosapic_serial_irq(dev);
#endif
if (!dev->irq) {