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Commit b1419061 authored by Can Guo's avatar Can Guo
Browse files

scsi: Block reset attempts to UFS through scsi ioctl 



User layer can reset scsi host/bus/target/device through scsi ioctl. Block
this path to UFS as it may cause stability issues to UFS.

Change-Id: I18e721f36d4f255139645f986ceb329f40b2fb33
Signed-off-by: default avatarCan Guo <cang@codeaurora.org>
parent 7b7d13e1

drivers/scsi/scsi_error.c

+5 −0
Original line number Diff line number Diff line
@@ -2330,12 +2330,17 @@ scsi_ioctl_reset(struct scsi_device *dev, int __user *arg) 
	struct scsi_cmnd *scmd;

	struct Scsi_Host *shost = dev->host;

	struct request *rq;

	const char *string;

	unsigned long flags;

	int error = 0, rtn, val;



	if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))

		return -EACCES;



	string = shost->hostt->name;

	if (!strcmp(string, "ufshcd"))

		return -EACCES;



	error = get_user(val, arg);

	if (error)

		return error;