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authorRobert Hancock <hancockrwd@gmail.com>2009-07-14 20:43:39 -0600
committerJeff Garzik <jgarzik@redhat.com>2009-09-01 19:47:20 -0400
commit6521148c6449724c3b707820b9c535c7e8b8afcd (patch)
treeb976cb33b4e7f09bdc765a09702659c14474c540 /drivers/ata/libata.h
parent1e641060c4b564e820abdb6a4c7a603a0d386250 (diff)
downloadop-kernel-dev-6521148c6449724c3b707820b9c535c7e8b8afcd.zip
op-kernel-dev-6521148c6449724c3b707820b9c535c7e8b8afcd.tar.gz
libata: add command name parsing for error output
This patch improve libata's output for error/notification messages to allow easier comprehension and debugging: When ATAPI commands issued through the SCSI layer fail, use SCSI functions to print the CDB in human-readable form instead of just dumping out the CDB in hex. Print out the name of the failed command (as defined by the ATA specification) in error handling output along with the raw register contents. When reporting status of ACPI taskfile commands executed on resume, also output the names of the commands being executed (or not) in readable form. Since the extra data for printing command names increases kernel size slightly, a config option has been added to allow disabling command name output (as well as some of the error register parsing) for those highly sensitive to kernel text size. Signed-off-by: Robert Hancock <hancockrwd@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/libata.h')
-rw-r--r--drivers/ata/libata.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index 89a1e00..be8e262 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -164,6 +164,7 @@ extern void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev,
extern void ata_eh_done(struct ata_link *link, struct ata_device *dev,
unsigned int action);
extern void ata_eh_autopsy(struct ata_port *ap);
+const char *ata_get_cmd_descript(u8 command);
extern void ata_eh_report(struct ata_port *ap);
extern int ata_eh_reset(struct ata_link *link, int classify,
ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
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