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Commit 6cc7a1b3 authored by qctecmdr Service's avatar qctecmdr Service Committed by Gerrit - the friendly Code Review server
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Merge "scsi: ufs: Release rw_sem while sending device management requests"

parents ec0df75a 5fa13e17

drivers/scsi/ufs/ufshcd.c

+5 −2
Original line number Diff line number Diff line
@@ -4044,6 +4044,7 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba, 
	int tag;

	struct completion wait;

	unsigned long flags;

	bool has_read_lock = false;



	/*

	 * May get invoked from shutdown and IOCTL contexts.
@@ -4051,8 +4052,10 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba, 
	 * In error recovery context, it may come with lock acquired.

	 */



	if (!ufshcd_is_shutdown_ongoing(hba) && !ufshcd_eh_in_progress(hba))

	if (!ufshcd_is_shutdown_ongoing(hba) && !ufshcd_eh_in_progress(hba)) {

		down_read(&hba->lock);

		has_read_lock = true;

	}



	/*

	 * Get free slot, sleep if slots are unavailable.
@@ -4090,7 +4093,7 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba, 
out_put_tag:

	ufshcd_put_dev_cmd_tag(hba, tag);

	wake_up(&hba->dev_cmd.tag_wq);

	if (!ufshcd_is_shutdown_ongoing(hba) && !ufshcd_eh_in_progress(hba))

	if (has_read_lock)

		up_read(&hba->lock);

	return err;

}