Patch "drm/bridge: nxp-ptn3460: simplify some error checking" has been added to the 6.6-stable tree

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This is a note to let you know that I've just added the patch titled

    drm/bridge: nxp-ptn3460: simplify some error checking

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-bridge-nxp-ptn3460-simplify-some-error-checking.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 28d3d0696688154cc04983f343011d07bf0508e4 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Wed, 6 Dec 2023 18:05:15 +0300
Subject: drm/bridge: nxp-ptn3460: simplify some error checking

From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

commit 28d3d0696688154cc04983f343011d07bf0508e4 upstream.

The i2c_master_send/recv() functions return negative error codes or
they return "len" on success.  So the error handling here can be written
as just normal checks for "if (ret < 0) return ret;".  No need to
complicate things.

Btw, in this code the "len" parameter can never be zero, but even if
it were, then I feel like this would still be the best way to write it.

Fixes: 914437992876 ("drm/bridge: nxp-ptn3460: fix i2c_master_send() error checking")
Suggested-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Robert Foss <rfoss@xxxxxxxxxx>
Signed-off-by: Robert Foss <rfoss@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/04242630-42d8-4920-8c67-24ac9db6b3c9@moroto.mountain
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/bridge/nxp-ptn3460.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

--- a/drivers/gpu/drm/bridge/nxp-ptn3460.c
+++ b/drivers/gpu/drm/bridge/nxp-ptn3460.c
@@ -54,15 +54,15 @@ static int ptn3460_read_bytes(struct ptn
 	int ret;
 
 	ret = i2c_master_send(ptn_bridge->client, &addr, 1);
-	if (ret <= 0) {
+	if (ret < 0) {
 		DRM_ERROR("Failed to send i2c command, ret=%d\n", ret);
-		return ret ?: -EIO;
+		return ret;
 	}
 
 	ret = i2c_master_recv(ptn_bridge->client, buf, len);
-	if (ret != len) {
+	if (ret < 0) {
 		DRM_ERROR("Failed to recv i2c data, ret=%d\n", ret);
-		return ret < 0 ? ret : -EIO;
+		return ret;
 	}
 
 	return 0;
@@ -78,9 +78,9 @@ static int ptn3460_write_byte(struct ptn
 	buf[1] = val;
 
 	ret = i2c_master_send(ptn_bridge->client, buf, ARRAY_SIZE(buf));
-	if (ret != ARRAY_SIZE(buf)) {
+	if (ret < 0) {
 		DRM_ERROR("Failed to send i2c command, ret=%d\n", ret);
-		return ret < 0 ? ret : -EIO;
+		return ret;
 	}
 
 	return 0;


Patches currently in stable-queue which might be from dan.carpenter@xxxxxxxxxx are

queue-6.6/drm-bridge-nxp-ptn3460-fix-i2c_master_send-error-checking.patch
queue-6.6/drm-bridge-nxp-ptn3460-simplify-some-error-checking.patch
queue-6.6/netfs-fscache-prevent-oops-in-fscache_put_cache.patch




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