From: Vladimir Zapolskiy <vz@mleia.com>
Date: Sun, 26 Jul 2015 21:18:46 +0000 (+0300)
Subject: misc: cxl: clean up afu_read_config()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=acb921a5a1e5fb2b864be25caf7317531f91a832;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

misc: cxl: clean up afu_read_config()

The sanity checks for overflow are not needed, because this is done on
caller side in fs/sysfs/file.c

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Cc: Ian Munsie <imunsie@au1.ibm.com>
Acked-by: Michael Neuling <mikey@neuling.org>
Reviewed-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/misc/cxl/sysfs.c b/drivers/misc/cxl/sysfs.c
index 31f38bc71a3d..87cd747bb511 100644
--- a/drivers/misc/cxl/sysfs.c
+++ b/drivers/misc/cxl/sysfs.c
@@ -443,12 +443,7 @@ static ssize_t afu_read_config(struct file *filp, struct kobject *kobj,
 	struct afu_config_record *cr = to_cr(kobj);
 	struct cxl_afu *afu = to_cxl_afu(container_of(kobj->parent, struct device, kobj));
 
-	u64 i, j, val, size = afu->crs_len;
-
-	if (off > size)
-		return 0;
-	if (off + count > size)
-		count = size - off;
+	u64 i, j, val;
 
 	for (i = 0; i < count;) {
 		val = cxl_afu_cr_read64(afu, cr->cr, off & ~0x7);