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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2009-04-12 20:06:56 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-13 11:37:07 -0700 |
| commit | c751085943362143f84346d274e0011419c84202 (patch) | |
| tree | 5323da4e3eba8126bf44e5107960ee2323d28a16 /include/scsi/scsi_scan.h | |
| parent | 7b11428d37fe65643172feff66cd0a4d72d1932a (diff) | |
| download | lwn-c751085943362143f84346d274e0011419c84202.tar.gz lwn-c751085943362143f84346d274e0011419c84202.zip | |
PM/Hibernate: Wait for SCSI devices scan to complete during resume
There is a race between resume from hibernation and the asynchronous
scanning of SCSI devices and to prevent it from happening we need to
call scsi_complete_async_scans() during resume from hibernation.
In addition, if the resume from hibernation is userland-driven, it's
better to wait for all device probes in the kernel to complete before
attempting to open the resume device.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/scsi/scsi_scan.h')
| -rw-r--r-- | include/scsi/scsi_scan.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/scsi/scsi_scan.h b/include/scsi/scsi_scan.h new file mode 100644 index 000000000000..78898889243d --- /dev/null +++ b/include/scsi/scsi_scan.h @@ -0,0 +1,11 @@ +#ifndef _SCSI_SCSI_SCAN_H +#define _SCSI_SCSI_SCAN_H + +#ifdef CONFIG_SCSI +/* drivers/scsi/scsi_scan.c */ +extern int scsi_complete_async_scans(void); +#else +static inline int scsi_complete_async_scans(void) { return 0; } +#endif + +#endif /* _SCSI_SCSI_SCAN_H */ |