linux-kernel - [PATCH] pstore: Properly assign mem

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Date:   Thu, 22 Dec 2022 14:10:49 +0100
From:   Luca Stefani <luca@...mprivacy.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Luca Stefani <luca@...mprivacy.com>,
        Kees Cook <keescook@...omium.org>,
        Anton Vorontsov <anton@...msg.org>,
        Colin Cross <ccross@...roid.com>,
        Tony Luck <tony.luck@...el.com>,
        Mukesh Ojha <mojha@...eaurora.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] pstore: Properly assign mem_type property

If mem-type is specified in the device tree
it would end up overriding the record_size
field instead of populating mem_type.

As record_size is currently parsed after the
improper assignment with default size 0 it
continued to work as expected regardless of the
value found in the device tree.

Simply changing the target field of the struct
is enough to get mem-type working as expected.

Fixes: 9d843e8fafc7 ("pstore: Add mem_type property DT parsing support")
Signed-off-by: Luca Stefani <luca@...mprivacy.com>
---
 fs/pstore/ram.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c
index fefe3d391d3a..28cb1555920c 100644
--- a/fs/pstore/ram.c
+++ b/fs/pstore/ram.c
@@ -670,7 +670,7 @@ static int ramoops_parse_dt(struct platform_device *pdev,
 		field = value;						\
 	}
 
-	parse_u32("mem-type", pdata->record_size, pdata->mem_type);
+	parse_u32("mem-type", pdata->mem_type, pdata->mem_type);
 	parse_u32("record-size", pdata->record_size, 0);
 	parse_u32("console-size", pdata->console_size, 0);
 	parse_u32("ftrace-size", pdata->ftrace_size, 0);
-- 
2.38.1