ide-tape: remove struct idetape_request_sense_result_t

Bart:
- remove unnecessary comment change
- remove two needless "!!"

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 22 insertions, 53 deletions

diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 58c4c1bc35cd..a7670fbd470d 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -333,32 +333,6 @@ typedef struct idetape_stage_s {
 } idetape_stage_t;
 
 /*
- *      REQUEST SENSE packet command result - Data Format.
- */
-typedef struct {
-        unsigned        error_code      :7;     /* Current of deferred errors */
-        unsigned        valid           :1;     /* The information field conforms to QIC-157C */
-        __u8            reserved1       :8;     /* Segment Number - Reserved */
-        unsigned        sense_key       :4;     /* Sense Key */
-        unsigned        reserved2_4     :1;     /* Reserved */
-        unsigned        ili             :1;     /* Incorrect Length Indicator */
-        unsigned        eom             :1;     /* End Of Medium */
-        unsigned        filemark        :1;     /* Filemark */
-        __u32           information __attribute__ ((packed));
-        __u8            asl;                    /* Additional sense length (n-7) */
-        __u32           command_specific;       /* Additional command specific information */
-        __u8            asc;                    /* Additional Sense Code */
-        __u8            ascq;                   /* Additional Sense Code Qualifier */
-        __u8            replaceable_unit_code;  /* Field Replaceable Unit Code */
-        unsigned        sk_specific1    :7;     /* Sense Key Specific */
-        unsigned        sksv            :1;     /* Sense Key Specific information is valid */
-        __u8            sk_specific2;           /* Sense Key Specific */
-        __u8            sk_specific3;           /* Sense Key Specific */
-        __u8            pad[2];                 /* Padding to 20 bytes */
-} idetape_request_sense_result_t;
-
-
-/*
  *      Most of our global data which we need to save even as we leave the
  *      driver due to an interrupt or a timer event is stored in a variable
  *      of type idetape_tape_t, defined below.
@@ -512,9 +486,6 @@ typedef struct ide_tape_obj {
         int avg_size;
         int avg_speed;
 
-        /* last sense information */
-        idetape_request_sense_result_t sense;
-
         char vendor_id[10];
         char product_id[18];
         char firmware_revision[6];
@@ -1025,36 +996,34 @@ static void idetape_init_pc (idetape_pc_t *pc)
 }
 
 /*
- *      idetape_analyze_error is called on each failed packet command retry
- *      to analyze the request sense. We currently do not utilize this
- *      information.
+ * called on each failed packet command retry to analyze the request sense. We
+ * currently do not utilize this information.
  */
-static void idetape_analyze_error (ide_drive_t *drive, idetape_request_sense_result_t *result)
+static void idetape_analyze_error(ide_drive_t *drive, u8 *sense)
 {
         idetape_tape_t *tape = drive->driver_data;
         idetape_pc_t *pc = tape->failed_pc;
 
-        tape->sense     = *result;
-        tape->sense_key = result->sense_key;
-        tape->asc       = result->asc;
-        tape->ascq      = result->ascq;
+        tape->sense_key = sense[2] & 0xF;
+        tape->asc       = sense[12];
+        tape->ascq      = sense[13];
 #if IDETAPE_DEBUG_LOG
         /*
-         *      Without debugging, we only log an error if we decided to
-         *      give up retrying.
+         * Without debugging, we only log an error if we decided to give up
+         * retrying.
          */
         if (tape->debug_level >= 1)
                 printk(KERN_INFO "ide-tape: pc = %x, sense key = %x, "
                         "asc = %x, ascq = %x\n",
-                        pc->c[0], result->sense_key,
-                        result->asc, result->ascq);
+                        pc->c[0], tape->sense_key,
+                        tape->asc, tape->ascq);
 #endif /* IDETAPE_DEBUG_LOG */
 
-        /*
-         *      Correct pc->actually_transferred by asking the tape.
-         */
+        /* Correct pc->actually_transferred by asking the tape.  */
         if (test_bit(PC_DMA_ERROR, &pc->flags)) {
-                pc->actually_transferred = pc->request_transfer - tape->tape_block_size * ntohl(get_unaligned(&result->information));
+                pc->actually_transferred = pc->request_transfer -
+                        tape->tape_block_size *
+                        ntohl(get_unaligned((u32 *)&sense[3]));
                 idetape_update_buffers(pc);
         }
 
@@ -1064,28 +1033,28 @@ static void idetape_analyze_error (ide_drive_t *drive, idetape_request_sense_res
          * (i.e. Seagate STT3401A Travan) don't support 0-length read/writes.
          */
         if ((pc->c[0] == IDETAPE_READ_CMD || pc->c[0] == IDETAPE_WRITE_CMD)
-            && pc->c[4] == 0 && pc->c[3] == 0 && pc->c[2] == 0) { /* length==0 */
-                if (result->sense_key == 5) {
+            /* length == 0 */
+            && pc->c[4] == 0 && pc->c[3] == 0 && pc->c[2] == 0) {
+                if (tape->sense_key == 5) {
                         /* don't report an error, everything's ok */
                         pc->error = 0;
                         /* don't retry read/write */
                         set_bit(PC_ABORT, &pc->flags);
                 }
         }
-        if (pc->c[0] == IDETAPE_READ_CMD && result->filemark) {
+        if (pc->c[0] == IDETAPE_READ_CMD && (sense[2] & 0x80)) {
                 pc->error = IDETAPE_ERROR_FILEMARK;
                 set_bit(PC_ABORT, &pc->flags);
         }
         if (pc->c[0] == IDETAPE_WRITE_CMD) {
-                if (result->eom ||
-                    (result->sense_key == 0xd && result->asc == 0x0 &&
-                     result->ascq == 0x2)) {
+                if ((sense[2] & 0x40) || (tape->sense_key == 0xd
+                     && tape->asc == 0x0 && tape->ascq == 0x2)) {
                         pc->error = IDETAPE_ERROR_EOD;
                         set_bit(PC_ABORT, &pc->flags);
                 }
         }
         if (pc->c[0] == IDETAPE_READ_CMD || pc->c[0] == IDETAPE_WRITE_CMD) {
-                if (result->sense_key == 8) {
+                if (tape->sense_key == 8) {
                         pc->error = IDETAPE_ERROR_EOD;
                         set_bit(PC_ABORT, &pc->flags);
                 }
@@ -1327,7 +1296,7 @@ static ide_startstop_t idetape_request_sense_callback (ide_drive_t *drive)
                 printk(KERN_INFO "ide-tape: Reached idetape_request_sense_callback\n");
 #endif /* IDETAPE_DEBUG_LOG */
         if (!tape->pc->error) {
-                idetape_analyze_error(drive, (idetape_request_sense_result_t *) tape->pc->buffer);
+                idetape_analyze_error(drive, tape->pc->buffer);
                 idetape_end_request(drive, 1, 0);
         } else {
                 printk(KERN_ERR "ide-tape: Error in REQUEST SENSE itself - Aborting request!\n");