Hello Selvan Mani,
The patch 75e152877069: "mtip32xx:Added appropriate timeout value for
secure erase" from Sep 27, 2012, leads to the following warning:
drivers/block/mtip32xx/mtip32xx.c:2222 exec_drive_taskfile()
error: potential NULL dereference 'outbuf'.
2220 /* check for erase mode support during secure erase.*/
2221 if ((fis.command == ATA_CMD_SEC_ERASE_UNIT)
2222 && (outbuf[0] &
MTIP_SEC_ERASE_MODE)) {
^^^^^^
Smatch complains that if taskout is zero this is a NULL dereference.
Obviously that's not normal, but it looks like it might be possible.
2223 erasemode = 1;
2224 }
regards,
dan carpenter
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