From: Tejun Heo Date: Mon, 15 May 2006 11:57:55 +0000 (+0900) Subject: [PATCH] libata: implement ATA printk helpers X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=61440db61fe4945ad9f7b32b4d6a22b17174aa1f;p=mv-sheeva.git [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 --- diff --git a/include/linux/libata.h b/include/linux/libata.h index 8154b366bbd..91e10e6b756 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -650,7 +650,18 @@ extern void ata_eng_timeout(struct ata_port *ap); extern void ata_eh_qc_complete(struct ata_queued_cmd *qc); extern void ata_eh_qc_retry(struct ata_queued_cmd *qc); +/* + * printk helpers + */ +#define ata_port_printk(ap, lv, fmt, args...) \ + printk(lv"ata%u: "fmt, (ap)->id , ##args) + +#define ata_dev_printk(dev, lv, fmt, args...) \ + printk(lv"ata%u.%02u: "fmt, (dev)->ap->id, (dev)->devno , ##args) +/* + * qc helpers + */ static inline int ata_sg_is_last(struct scatterlist *sg, struct ata_queued_cmd *qc) {