From: Manoj Kumar <manoj@linux.vnet.ibm.com>
Date: Wed, 21 Oct 2015 20:15:30 +0000 (-0500)
Subject: cxlflash: Fix to double the delay each time
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b22b4037a013e9ce77cec79d95fdcdc9bece0955;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

cxlflash: Fix to double the delay each time

The operator used to double the master context response delay
is incorrect and does not result in delay doubling.

To fix, use a left shift instead of the XOR operator.

Reported-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Manoj N. Kumar <manoj@linux.vnet.ibm.com>
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
---

diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
index c77cb929dacb..51883bef8444 100644
--- a/drivers/scsi/cxlflash/main.c
+++ b/drivers/scsi/cxlflash/main.c
@@ -303,7 +303,7 @@ write_rrin:
 		if (rrin != 0x1)
 			break;
 		/* Double delay each time */
-		udelay(2 ^ nretry);
+		udelay(2 << nretry);
 	} while (nretry++ < MC_ROOM_RETRY_CNT);
 }