linux-kernel - [PATCH] fbdev: aty128fb: make some arrays static const

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Date:   Sun,  9 Jan 2022 22:37:19 +0000
From:   Colin Ian King <colin.i.king@...il.com>
To:     Paul Mackerras <paulus@...ba.org>, linux-fbdev@...r.kernel.org,
        dri-devel@...ts.freedesktop.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] fbdev: aty128fb: make some arrays static const

Don't populate some read-only arrays on the stack but instead
make them static const. Also makes the object code a little smaller.
Re-format one of the declarations. Add spaces between commas and make
PostDivSet unsigned int to fixup checkpatch warnings.

Signed-off-by: Colin Ian King <colin.i.king@...il.com>
---
 drivers/video/fbdev/aty/aty128fb.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/video/fbdev/aty/aty128fb.c b/drivers/video/fbdev/aty/aty128fb.c
index e6a48689c294..882e3cdb750d 100644
--- a/drivers/video/fbdev/aty/aty128fb.c
+++ b/drivers/video/fbdev/aty/aty128fb.c
@@ -952,7 +952,7 @@ static void aty128_timings(struct aty128fb_par *par)
 	u32 x_mpll_ref_fb_div;
 	u32 xclk_cntl;
 	u32 Nx, M;
-	unsigned PostDivSet[] = { 0, 1, 2, 4, 8, 3, 6, 12 };
+	static const unsigned int PostDivSet[] = { 0, 1, 2, 4, 8, 3, 6, 12 };
 #endif
 
 	if (!par->constants.ref_clk)
@@ -1321,8 +1321,10 @@ static void aty128_set_pll(struct aty128_pll *pll,
 {
 	u32 div3;
 
-	unsigned char post_conv[] =	/* register values for post dividers */
-        { 2, 0, 1, 4, 2, 2, 6, 2, 3, 2, 2, 2, 7 };
+	/* register values for post dividers */
+	static const unsigned char post_conv[] = {
+		2, 0, 1, 4, 2, 2, 6, 2, 3, 2, 2, 2, 7
+	};
 
 	/* select PPLL_DIV_3 */
 	aty_st_le32(CLOCK_CNTL_INDEX, aty_ld_le32(CLOCK_CNTL_INDEX) | (3 << 8));
@@ -1360,7 +1362,7 @@ static int aty128_var_to_pll(u32 period_in_ps, struct aty128_pll *pll,
 			     const struct aty128fb_par *par)
 {
 	const struct aty128_constants c = par->constants;
-	unsigned char post_dividers[] = {1,2,4,8,3,6,12};
+	static const unsigned char post_dividers[] = { 1, 2, 4, 8, 3, 6, 12 };
 	u32 output_freq;
 	u32 vclk;        /* in .01 MHz */
 	int i = 0;
-- 
2.32.0