sata_mv: fix loop with last port
commit
f351b2d638c3cb0b95adde3549b7bfaf3f991dfa
sata_mv: Support SoC controllers
cause panic:
scsi 4:0:0:0: Direct-Access ATA HITACHI HDS7225S V44O PQ: 0 ANSI: 5
sd 4:0:0:0: [sde]
488390625 512-byte hardware sectors (250056 MB)
sd 4:0:0:0: [sde] Write Protect is off
sd 4:0:0:0: [sde] Mode Sense: 00 3a 00 00
sd 4:0:0:0: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sd 4:0:0:0: [sde]
488390625 512-byte hardware sectors (250056 MB)
sd 4:0:0:0: [sde] Write Protect is off
sd 4:0:0:0: [sde] Mode Sense: 00 3a 00 00
sd 4:0:0:0: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sde:<1>BUG: unable to handle kernel NULL pointer dereference at
000000000000001a
IP: [<
ffffffff806262c7>] mv_interrupt+0x21c/0x4cc
PGD 0
Oops: 0000 [1] SMP
CPU 3
Modules linked in:
Pid: 0, comm: swapper Not tainted
2.6.24-smp-08636-g0afc2ed-dirty #26
RIP: 0010:[<
ffffffff806262c7>] [<
ffffffff806262c7>] mv_interrupt+0x21c/0x4cc
RSP: 0000:
ffff8102050bbec8 EFLAGS:
00010297
RAX:
0000000000000008 RBX:
0000000000000000 RCX:
0000000000000003
RDX:
0000000000008000 RSI:
0000000000000286 RDI:
ffff8102035180e0
RBP:
0000000000000001 R08:
0000000000000003 R09:
ffff8102036613e0
R10:
0000000000000002 R11:
ffffffff8061474c R12:
ffff8102035bf828
R13:
0000000000000008 R14:
ffff81020348ece8 R15:
ffffc20002cb2000
FS:
0000000000000000(0000) GS:
ffff810405025700(0000) knlGS:
0000000000000000
CS: 0010 DS: 0018 ES: 0018 CR0:
000000008005003b
CR2:
000000000000001a CR3:
0000000000201000 CR4:
00000000000006e0
DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
DR3:
0000000000000000 DR6:
00000000ffff0ff0 DR7:
0000000000000400
Process swapper (pid: 0, threadinfo
ffff810405094000, task
ffff8102050b28c0)
Stack:
000000010000000c 0002040000220400 0000001100000002 ffff81020348eda8
0000000000000001 ffff8102035f2cc0 0000000000000000 0000000000000000
0000000000000018 0000000000000000 0000000000000000 ffffffff80269ee8
Call Trace:
<IRQ> [<
ffffffff80269ee8>] ? handle_IRQ_event+0x25/0x53
[<
ffffffff8026b393>] ? handle_fasteoi_irq+0x90/0xc8
[<
ffffffff802218e2>] ? do_IRQ+0xf1/0x15f
[<
ffffffff8021df24>] ? default_idle+0x0/0x55
[<
ffffffff8021f361>] ? ret_from_intr+0x0/0xa
<EOI> [<
ffffffff8023010c>] ? lapic_next_event+0x0/0xa
[<
ffffffff8021df55>] ? default_idle+0x31/0x55
[<
ffffffff8021df50>] ? default_idle+0x2c/0x55
[<
ffffffff8021df24>] ? default_idle+0x0/0x55
[<
ffffffff8021e00b>] ? cpu_idle+0x92/0xb8
Code: 41 14 85 c0 89 44 24 14 0f 84 9d 02 00 00 f7 d0 01 d6 41 89 d5 89 41 14 8b 41 14 89 34 24 e9 7e 02 00 00 49 63 c5 49 8b 5c c6 48 <f6> 43 1a 80 4c 8b a3 20 37 00 00 0f 85 62 02 00 00 31 c9 41 83
RIP [<
ffffffff806262c7>] mv_interrupt+0x21c/0x4cc
RSP <
ffff8102050bbec8>
CR2:
000000000000001a
---[ end trace
2583b5f7a5350584 ]---
Kernel panic - not syncing: Aiee, killing interrupt handler!
last_port already include port0 base.
this patch change use last_port directly, and move pp assignment later.
Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>