linux-kernel - [PATCH] EDAC, sb_edac: Remove VLA usage

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Message-ID: <20180309235654.GA9887@embeddedor.com>
Date:   Fri, 9 Mar 2018 21:02:18 -0600
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Borislav Petkov <bp@...en8.de>
Cc:     linux-edac@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH] EDAC, sb_edac: Remove VLA usage

In preparation to enabling -Wvla, remove VLA and replace it
with a fixed-length array instead.

Fixed as part of the directive to remove all VLAs from
the kernel: https://lkml.org/lkml/2018/3/7/621

Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>
---

Notice that due to this change, the field max_interleave is no longer
used after it has been initialized. Maybe it should be removed?

Thanks
--
Gustavo
---
 drivers/edac/sb_edac.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index 8721002..11cb2c9 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -110,6 +110,7 @@ static const u32 knl_interleave_list[] = {
 	0xdc, 0xe4, 0xec, 0xf4, 0xfc, /* 15-19 */
 	0x104, 0x10c, 0x114, 0x11c,   /* 20-23 */
 };
+#define MAX_INTERLEAVE	ARRAY_SIZE(knl_interleave_list)
 
 struct interleave_pkg {
 	unsigned char start;
@@ -1899,7 +1900,7 @@ static int get_memory_error_data(struct mem_ctl_info *mci,
 	int			n_rir, n_sads, n_tads, sad_way, sck_xch;
 	int			sad_interl, idx, base_ch;
 	int			interleave_mode, shiftup = 0;
-	unsigned		sad_interleave[pvt->info.max_interleave];
+	unsigned int		sad_interleave[MAX_INTERLEAVE];
 	u32			reg, dram_rule;
 	u8			ch_way, sck_way, pkg, sad_ha = 0;
 	u32			tad_offset;
-- 
2.7.4