[PATCH] libata: use ata_dev_id_c_string()

Use ata_dev_id_c_string()

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

3 files changed, 13 insertions, 35 deletions

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 7e410299d67a..1d65f703348e 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -2301,24 +2301,14 @@ static const char * const ata_dma_blacklist [] = {
 
 static int ata_dma_blacklisted(const struct ata_device *dev)
 {
-        unsigned char model_num[40];
-        char *s;
-        unsigned int len;
+        unsigned char model_num[41];
         int i;
 
-        ata_dev_id_string(dev->id, model_num, ATA_ID_PROD_OFS,
-                          sizeof(model_num));
-        s = &model_num[0];
-        len = strnlen(s, sizeof(model_num));
-
-        /* ATAPI specifies that empty space is blank-filled; remove blanks */
-        while ((len > 0) && (s[len - 1] == ' ')) {
-                len--;
-                s[len] = 0;
-        }
+        ata_dev_id_c_string(dev->id, model_num, ATA_ID_PROD_OFS,
+                            sizeof(model_num));
 
         for (i = 0; i < ARRAY_SIZE(ata_dma_blacklist); i++)
-                if (!strncmp(ata_dma_blacklist[i], s, len))
+                if (!strcmp(ata_dma_blacklist[i], model_num))
                         return 1;
 
         return 0;
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 26f07a2617f9..ebd7cf42550b 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -1806,15 +1806,12 @@ static int ata_dev_supports_fua(u16 *id)
         if (!ata_id_has_fua(id))
                 return 0;
 
-        model[40] = '\0';
-        fw[8] = '\0';
+        ata_dev_id_c_string(id, model, ATA_ID_PROD_OFS, sizeof(model));
+        ata_dev_id_c_string(id, fw, ATA_ID_FW_REV_OFS, sizeof(fw));
 
-        ata_dev_id_string(id, model, ATA_ID_PROD_OFS, sizeof(model) - 1);
-        ata_dev_id_string(id, fw, ATA_ID_FW_REV_OFS, sizeof(fw) - 1);
-
-        if (strncmp(model, "Maxtor", 6))
+        if (strcmp(model, "Maxtor"))
                 return 1;
-        if (strncmp(fw, "BANC1G10", 8))
+        if (strcmp(fw, "BANC1G10"))
                 return 1;
 
         return 0; /* blacklisted */
diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c
index bd2887741d78..61c4ac7ff9db 100644
--- a/drivers/scsi/sata_sil.c
+++ b/drivers/scsi/sata_sil.c
@@ -337,22 +337,13 @@ static void sil_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
 static void sil_dev_config(struct ata_port *ap, struct ata_device *dev)
 {
         unsigned int n, quirks = 0;
-        unsigned char model_num[40];
-        const char *s;
-        unsigned int len;
+        unsigned char model_num[41];
 
-        ata_dev_id_string(dev->id, model_num, ATA_ID_PROD_OFS,
-                          sizeof(model_num));
-        s = &model_num[0];
-        len = strnlen(s, sizeof(model_num));
-
-        /* ATAPI specifies that empty space is blank-filled; remove blanks */
-        while ((len > 0) && (s[len - 1] == ' '))
-                len--;
+        ata_dev_id_c_string(dev->id, model_num, ATA_ID_PROD_OFS,
+                            sizeof(model_num));
 
         for (n = 0; sil_blacklist[n].product; n++)
-                if (!memcmp(sil_blacklist[n].product, s,
-                            strlen(sil_blacklist[n].product))) {
+                if (!strcmp(sil_blacklist[n].product, model_num)) {
                         quirks = sil_blacklist[n].quirk;
                         break;
                 }
@@ -372,7 +363,7 @@ static void sil_dev_config(struct ata_port *ap, struct ata_device *dev)
         /* limit to udma5 */
         if (quirks & SIL_QUIRK_UDMA5MAX) {
                 printk(KERN_INFO "ata%u(%u): applying Maxtor errata fix %s\n",
-                       ap->id, dev->devno, s);
+                       ap->id, dev->devno, model_num);
                 ap->udma_mask &= ATA_UDMA5;
                 return;
         }