2 files changed, 21 insertions, 13 deletions

diff --git a/include/linux/ata.h b/include/linux/ata.h
index a53318b8cbd0..08a86d5cdf1b 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -731,12 +731,17 @@ static inline int ata_id_current_chs_valid(const u16 *id)
 
 static inline int ata_id_is_cfa(const u16 *id)
 {
-        if (id[ATA_ID_CONFIG] == 0x848A)        /* Standard CF */
+        if (id[ATA_ID_CONFIG] == 0x848A)        /* Traditional CF */
                 return 1;
-        /* Could be CF hiding as standard ATA */
-        if (ata_id_major_version(id) >= 3 &&
-            id[ATA_ID_COMMAND_SET_1] != 0xFFFF &&
-           (id[ATA_ID_COMMAND_SET_1] & (1 << 2)))
+        /*
+         * CF specs don't require specific value in the word 0 anymore and yet
+         * they forbid to report the ATA version in the word 80 and require the
+         * CFA feature set support to be indicated in the word 83 in this case.
+         * Unfortunately, some cards only follow either of this requirements,
+         * and while those that don't indicate CFA feature support need some
+         * sort of quirk list, it seems impractical for the ones that do...
+         */
+        if ((id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004)
                 return 1;
         return 0;
 }
diff --git a/include/linux/libata.h b/include/linux/libata.h
index bca3ba25f52a..5d87bc09a1f5 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -380,6 +380,7 @@ enum {
         ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
                                                     not multiple of 16 bytes */
         ATA_HORKAGE_FIRMWARE_WARN = (1 << 12),  /* firwmare update warning */
+        ATA_HORKAGE_1_5_GBPS    = (1 << 13),    /* force 1.5 Gbps */
 
          /* DMA mask for user DMA control: User visible values; DO NOT
             renumber */
@@ -580,7 +581,7 @@ struct ata_device {
         acpi_handle             acpi_handle;
         union acpi_object       *gtf_cache;
 #endif
-        /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */
+        /* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
         u64                     n_sectors;      /* size of device, if ATA */
         unsigned int            class;          /* ATA_DEV_xxx */
         unsigned long           unpark_deadline;
@@ -605,20 +606,22 @@ struct ata_device {
         u16                     heads;          /* Number of heads */
         u16                     sectors;        /* Number of sectors per track */
 
-        /* error history */
-        int                     spdn_cnt;
-        struct ata_ering        ering;
-
         union {
                 u16             id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
                 u32             gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
         };
+
+        /* error history */
+        int                     spdn_cnt;
+        /* ering is CLEAR_END, read comment above CLEAR_END */
+        struct ata_ering        ering;
 };
 
-/* Offset into struct ata_device.  Fields above it are maintained
- * acress device init.  Fields below are zeroed.
+/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
+ * cleared to zero on ata_dev_init().
  */
-#define ATA_DEVICE_CLEAR_OFFSET         offsetof(struct ata_device, n_sectors)
+#define ATA_DEVICE_CLEAR_BEGIN          offsetof(struct ata_device, n_sectors)
+#define ATA_DEVICE_CLEAR_END            offsetof(struct ata_device, ering)
 
 struct ata_eh_info {
         struct ata_device       *dev;           /* offending device */