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Subject[PATCH 8/9] mtip32xx: abort secure erase operation if the device is mounted
Date
Signed-off-by: Sam Bradshaw <sbradshaw@micron.com>
Signed-off-by: Asai Thambi S P <asamymuthupa@micron.com>
---
drivers/block/mtip32xx/mtip32xx.c | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 0b223e3..f8c12e1 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -2147,6 +2147,18 @@ static int exec_drive_taskfile(struct driver_data *dd,
fis.lba_hi,
fis.device);

+ /* Check for secure erase while fs mounted */
+ if ((fis.command == ATA_CMD_SEC_ERASE_PREP) ||
+ (fis.command == ATA_CMD_SEC_ERASE_UNIT) ||
+ (fis.command == 0xFC && fis.features == 0x12)) {
+ if (dd->bdev && dd->bdev->bd_holders > 0) {
+ dev_warn(&dd->pdev->dev, "Drive erase aborted due to non-zero refcount (%d)\n",
+ dd->bdev->bd_holders);
+ err = -ERESTARTSYS;
+ goto abort;
+ }
+ }
+
/* check for erase mode support during secure erase.*/
if ((fis.command == ATA_CMD_SEC_ERASE_UNIT) && outbuf &&
(outbuf[0] & MTIP_SEC_ERASE_MODE)) {
--
1.7.1



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