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authorTejun Heo <htejun@gmail.com>2006-05-15 07:57:55 -0400
committerTejun Heo <htejun@gmail.com>2006-05-15 07:57:55 -0400
commit61440db61fe4945ad9f7b32b4d6a22b17174aa1f (patch)
tree4c093d6c72facf6bc77fcedce7d8c1cb85415f5b /include/linux/libata.h
parent3373efd89dead4ce7818d685729e0431448357c9 (diff)
[PATCH] libata: implement ATA printk helpers
Implement ata_{port|dev}_printk() which prefixes the message with proper identification string. This change is necessary for later PM support because devices and links should be identified differently depending on how they are attached. This also helps unifying device id strings. Currently, there are two forms in use (P is the port number D device number) - 'ataP(D):', and 'ataP: dev D '. These macros also make it harder to forget proper ID string (e.g. printing only port number when a device is in question). Debug message handling can be integrated into these printk macros by passing debug type and level via @lv. Signed-off-by: Tejun Heo <htejun@gmail.com>
Diffstat (limited to 'include/linux/libata.h')
-rw-r--r--include/linux/libata.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 8154b366bbd1..91e10e6b7565 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -650,7 +650,18 @@ extern void ata_eng_timeout(struct ata_port *ap);
650extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); 650extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
651extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); 651extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);
652 652
653/*
654 * printk helpers
655 */
656#define ata_port_printk(ap, lv, fmt, args...) \
657 printk(lv"ata%u: "fmt, (ap)->id , ##args)
658
659#define ata_dev_printk(dev, lv, fmt, args...) \
660 printk(lv"ata%u.%02u: "fmt, (dev)->ap->id, (dev)->devno , ##args)
653 661
662/*
663 * qc helpers
664 */
654static inline int 665static inline int
655ata_sg_is_last(struct scatterlist *sg, struct ata_queued_cmd *qc) 666ata_sg_is_last(struct scatterlist *sg, struct ata_queued_cmd *qc)
656{ 667{