FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-19 07:27:50 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

[SCSI] ipr: Prevent overlapped adapter resets

Browse Source 
This patch fixes some scenarios where an ipr adapter
could get reset overlapped, which could cause very
long timeouts to occur, or PCI bus errors.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Brian King 2007-04-26 16:00:06 -05:00 committed by James Bottomley
parent d7a54e30d3
commit 970ea29411
1 changed files with 23 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/scsi/ipr.c
View File

@ -2635,8 +2635,13 @@ static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
if (!capable(CAP_SYS_ADMIN)) if (!capable(CAP_SYS_ADMIN))
return -EACCES; return -EACCES;
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
while(ioa_cfg->in_reset_reload) {
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
}
ioa_cfg->errors_logged = 0; ioa_cfg->errors_logged = 0;
ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL); ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
@ -2958,6 +2963,11 @@ static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
unsigned long lock_flags; unsigned long lock_flags;
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
while(ioa_cfg->in_reset_reload) {
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
}
if (ioa_cfg->ucode_sglist) { if (ioa_cfg->ucode_sglist) {
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
@ -7428,6 +7438,12 @@ static void __ipr_remove(struct pci_dev *pdev)
ENTER; ENTER;
spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
while(ioa_cfg->in_reset_reload) {
spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
}
ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
@ -7551,6 +7567,12 @@ static void ipr_shutdown(struct pci_dev *pdev)
unsigned long lock_flags = 0; unsigned long lock_flags = 0;
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
while(ioa_cfg->in_reset_reload) {
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
}
ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL); ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);