Signed-off-by: Borislav Petkov <petkovbb@xxxxxxxxx>
---
drivers/ide/ide-tape.c | 58 ++++++++++++++++++++---------------------------
1 files changed, 25 insertions(+), 33 deletions(-)
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 712c5df..175d507 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -520,20 +520,6 @@ enum {
#define IDETAPE_ERROR_FILEMARK 102
#define IDETAPE_ERROR_EOD 103
-/*
- * The following is used to format the general configuration word of
- * the ATAPI IDENTIFY DEVICE command.
- */
-struct idetape_id_gcw {
- unsigned packet_size :2; /* Packet Size */
- unsigned reserved234 :3; /* Reserved */
- unsigned drq_type :2; /* Command packet DRQ type */
- unsigned removable :1; /* Removable media */
- unsigned device_type :5; /* Device type */
- unsigned reserved13 :1; /* Reserved */
- unsigned protocol :2; /* Protocol type */
-};
-
/* Structures related to the SELECT SENSE / MODE SENSE packet commands. */
#define IDETAPE_BLOCK_DESCRIPTOR 0
#define IDETAPE_CAPABILITIES_PAGE 0x2a
@@ -3382,37 +3368,41 @@ static int idetape_chrdev_release (struct inode *inode, struct file *filp)
}
/*
- * idetape_identify_device is called to check the contents of the
- * ATAPI IDENTIFY command results. We return:
+ * check the contents of the ATAPI IDENTIFY command results. We return:
*
- * 1 If the tape can be supported by us, based on the information
- * we have so far.
+ * 1 - If the tape can be supported by us, based on the information we have so
+ * far.
*
- * 0 If this tape driver is not currently supported by us.
+ * 0 - If this tape driver is not currently supported by us.
*/
-static int idetape_identify_device (ide_drive_t *drive)
+static int idetape_identify_device(ide_drive_t *drive)
{
- struct idetape_id_gcw gcw;
- struct hd_driveid *id = drive->id;
+
+ u8 gcw[2];
+ u8 protocol, device_type, removable, packet_size;
if (drive->id_read == 0)
return 1;
- *((unsigned short *) &gcw) = id->config;
+ *((unsigned short *) &gcw) = drive->id->config;
- /* Check that we can support this device */
+ protocol = (gcw[1] & 0xC0) >> 6;
+ device_type = gcw[1] & 0x1F;
+ removable = !!(gcw[0] & 0x80);
+ packet_size = gcw[0] & 0x3;
- if (gcw.protocol != 2)
+ /* Check that we can support this device */
+ if (protocol != 2)
printk(KERN_ERR "ide-tape: Protocol (0x%02x) is not ATAPI\n",
- gcw.protocol);
- else if (gcw.device_type != 1)
+ protocol);
+ else if (device_type != 1)
printk(KERN_ERR "ide-tape: Device type (0x%02x) is not set "
- "to tape\n", gcw.device_type);
- else if (!gcw.removable)
+ "to tape\n", device_type);
+ else if (!removable)
printk(KERN_ERR "ide-tape: The removable flag is not set\n");
- else if (gcw.packet_size != 0) {
+ else if (packet_size != 0) {
printk(KERN_ERR "ide-tape: Packet size (0x%02x) is not 12 "
- "bytes long\n", gcw.packet_size);
+ "bytes long\n", packet_size);
} else
return 1;
return 0;
@@ -3541,8 +3531,8 @@ static void idetape_setup (ide_drive_t *drive, idetape_tape_t *tape, int minor)
{
unsigned long t1, tmid, tn, t;
int speed;
- struct idetape_id_gcw gcw;
int stage_size;
+ u8 gcw[2];
struct sysinfo si;
u16 *ctl = (u16 *)&tape->caps[12];
@@ -3564,7 +3554,9 @@ static void idetape_setup (ide_drive_t *drive, idetape_tape_t *tape, int minor)
tape->max_insert_speed = 10000;
tape->speed_control = 1;
*((unsigned short *) &gcw) = drive->id->config;
- if (gcw.drq_type == 1)
+
+ /* Command packet DRQ type */
+ if (((gcw[0] & 0x60) >> 5) == 1)
tape->flags |= IDETAPE_FL_DRQ_INTERRUPT;
tape->min_pipeline = tape->max_pipeline = tape->max_stages = 10;
--
1.5.3.7
-
To unsubscribe from this list: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
