Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: (29 commits)
  libata: implement EH fast drain
  libata: schedule probing after SError access failure during autopsy
  libata: clear HOTPLUG flag after a reset
  libata: reorganize ata_ehi_hotplugged()
  libata: improve SCSI scan failure handling
  libata: quickly trigger SATA SPD down after debouncing failed
  libata: improve SATA PHY speed down logic
  The SATA controller device ID is different according to
  ahci: implement SCR_NOTIFICATION r/w
  ahci: make NO_NCQ handling more consistent
  libata: make ->scr_read/write callbacks return error code
  libata: implement AC_ERR_NCQ
  libata: improve EH report formatting
  sata_sil24: separate out sil24_do_softreset()
  sata_sil24: separate out sil24_exec_polled_cmd()
  sata_sil24: replace sil24_update_tf() with sil24_read_tf()
  ahci: separate out ahci_do_softreset()
  ahci: separate out ahci_exec_polled_cmd()
  ahci: separate out ahci_kick_engine()
  ahci: use deadline instead of fixed timeout for 1st FIS for SRST
  ...

1 files changed, 21 insertions, 17 deletions

diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index db81e3efa5e..0b58c4df6fd 100644
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -236,8 +236,8 @@ static void nv_ck804_host_stop(struct ata_host *host);
 static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance);
 static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance);
 static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance);
-static u32 nv_scr_read (struct ata_port *ap, unsigned int sc_reg);
-static void nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
+static int nv_scr_read (struct ata_port *ap, unsigned int sc_reg, u32 *val);
+static int nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
 
 static void nv_nf2_freeze(struct ata_port *ap);
 static void nv_nf2_thaw(struct ata_port *ap);
@@ -715,19 +715,20 @@ static int nv_adma_check_cpb(struct ata_port *ap, int cpb_num, int force_err)
 		int freeze = 0;
 
 		ata_ehi_clear_desc(ehi);
-		ata_ehi_push_desc(ehi, "CPB resp_flags 0x%x", flags );
+		__ata_ehi_push_desc(ehi, "CPB resp_flags 0x%x: ", flags );
 		if (flags & NV_CPB_RESP_ATA_ERR) {
-			ata_ehi_push_desc(ehi, ": ATA error");
+			ata_ehi_push_desc(ehi, "ATA error");
 			ehi->err_mask |= AC_ERR_DEV;
 		} else if (flags & NV_CPB_RESP_CMD_ERR) {
-			ata_ehi_push_desc(ehi, ": CMD error");
+			ata_ehi_push_desc(ehi, "CMD error");
 			ehi->err_mask |= AC_ERR_DEV;
 		} else if (flags & NV_CPB_RESP_CPB_ERR) {
-			ata_ehi_push_desc(ehi, ": CPB error");
+			ata_ehi_push_desc(ehi, "CPB error");
 			ehi->err_mask |= AC_ERR_SYSTEM;
 			freeze = 1;
 		} else {
 			/* notifier error, but no error in CPB flags? */
+			ata_ehi_push_desc(ehi, "unknown");
 			ehi->err_mask |= AC_ERR_OTHER;
 			freeze = 1;
 		}
@@ -854,20 +855,21 @@ static irqreturn_t nv_adma_interrupt(int irq, void *dev_instance)
 				struct ata_eh_info *ehi = &ap->eh_info;
 
 				ata_ehi_clear_desc(ehi);
-				ata_ehi_push_desc(ehi, "ADMA status 0x%08x", status );
+				__ata_ehi_push_desc(ehi, "ADMA status 0x%08x: ", status );
 				if (status & NV_ADMA_STAT_TIMEOUT) {
 					ehi->err_mask |= AC_ERR_SYSTEM;
-					ata_ehi_push_desc(ehi, ": timeout");
+					ata_ehi_push_desc(ehi, "timeout");
 				} else if (status & NV_ADMA_STAT_HOTPLUG) {
 					ata_ehi_hotplugged(ehi);
-					ata_ehi_push_desc(ehi, ": hotplug");
+					ata_ehi_push_desc(ehi, "hotplug");
 				} else if (status & NV_ADMA_STAT_HOTUNPLUG) {
 					ata_ehi_hotplugged(ehi);
-					ata_ehi_push_desc(ehi, ": hot unplug");
+					ata_ehi_push_desc(ehi, "hot unplug");
 				} else if (status & NV_ADMA_STAT_SERROR) {
 					/* let libata analyze SError and figure out the cause */
-					ata_ehi_push_desc(ehi, ": SError");
-				}
+					ata_ehi_push_desc(ehi, "SError");
+				} else
+					ata_ehi_push_desc(ehi, "unknown");
 				ata_port_freeze(ap);
 				continue;
 			}
@@ -1391,20 +1393,22 @@ static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance)
 	return ret;
 }
 
-static u32 nv_scr_read (struct ata_port *ap, unsigned int sc_reg)
+static int nv_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
 {
 	if (sc_reg > SCR_CONTROL)
-		return 0xffffffffU;
+		return -EINVAL;
 
-	return ioread32(ap->ioaddr.scr_addr + (sc_reg * 4));
+	*val = ioread32(ap->ioaddr.scr_addr + (sc_reg * 4));
+	return 0;
 }
 
-static void nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
+static int nv_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
 {
 	if (sc_reg > SCR_CONTROL)
-		return;
+		return -EINVAL;
 
 	iowrite32(val, ap->ioaddr.scr_addr + (sc_reg * 4));
+	return 0;
 }
 
 static void nv_nf2_freeze(struct ata_port *ap)