[PATCH 16/20] ide: check BUSY and ERROR status bits before reading data in drive_cmd_intr()

[Bartlomiej Zolnierkiewicz]

Signed-off-by: Bartlomiej Zolnierkiewicz <[EMAIL PROTECTED]>
---
 drivers/ide/ide-io.c |    7 +++++++
 1 file changed, 7 insertions(+)

Index: b/drivers/ide/ide-io.c
===================================================================
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -643,6 +643,13 @@ static ide_startstop_t drive_cmd_intr (i
        if (pio_in) {
                u8 io_32bit = drive->io_32bit;
                stat = hwif->INB(IDE_STATUS_REG);
+               if (!OK_STAT(stat, DRQ_STAT, BAD_R_STAT)) {
+                       if (stat & (ERR_STAT | DRQ_STAT))
+                               return ide_error(drive, __FUNCTION__, stat);
+                       ide_set_handler(drive, &drive_cmd_intr, WAIT_WORSTCASE,
+                                       NULL);
+                       return ide_started;
+               }
                drive->io_32bit = 0;
                hwif->ata_input_data(drive, &args[4], args[3] * SECTOR_WORDS);
                drive->io_32bit = io_32bit;
-
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