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libata: make ata_print_id atomic

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This variable is incremented from multiple contexts (module_init via
libata-lldds and the libsas discovery thread).  Make it atomic to head
off any chance of libsas and libata creating duplicate ids.

Acked-by: Jacek Danecki <jacek.danecki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Dan Williams
2012-03-10 23:28:46 -08:00
committed by Jeff Garzik
parent 99b80e9771
commit 85d6725b7c
3 changed files with 5 additions and 5 deletions
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2
drivers/ata/libata.h
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@@ -53,7 +53,7 @@ enum {
ATA_DNXFER_QUIET = (1 << 31),
};
extern unsigned int ata_print_id;
extern atomic_t ata_print_id;
extern int atapi_passthru16;
extern int libata_fua;
extern int libata_noacpi;