Re: [PATCH] atmel_lcdfb: Correct fifo size for some products
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From: Andrew Morton <akpm@linux-foundation.org>
Date: 2009-05-28 07:35:41
On Fri, 15 May 2009 12:34:18 +0200 Nicolas Ferre [off-list ref] wrote:
Remove wrong fifo size definition for some AT91 products. Due to a misunderstanding of some AT91 datasheets, a fifo size of 2048 (words) has been introduced by mistake. In fact, all products (AT91/AT32) are sharing the same fifo size of 512 words.
Changelog fails to describe the impact of the bug, so people who are working out which kernel versions it should be ported into don't know what to do. Furthermore, people who are hitting a bug in this driver in older kernel versions will have difficulty working out whether this patch might fix their bug.
Can we consider this fix for .30-final ?
Sure, but for what reason? What about 2.6.29.x, 2.6.28.x, earlier?
quoted hunk ↗ jump to hunk
--- a/drivers/video/atmel_lcdfb.c +++ b/drivers/video/atmel_lcdfb.c@@ -29,14 +29,8 @@ /* configurable parameters */ #define ATMEL_LCDC_CVAL_DEFAULT 0xc8 -#define ATMEL_LCDC_DMA_BURST_LEN 8 - -#if defined(CONFIG_ARCH_AT91SAM9263) || defined(CONFIG_ARCH_AT91CAP9) || \ - defined(CONFIG_ARCH_AT91SAM9RL) -#define ATMEL_LCDC_FIFO_SIZE 2048 -#else -#define ATMEL_LCDC_FIFO_SIZE 512 -#endif +#define ATMEL_LCDC_DMA_BURST_LEN 8 /* words */ +#define ATMEL_LCDC_FIFO_SIZE 512 /* words */ #if defined(CONFIG_ARCH_AT91) #define ATMEL_LCDFB_FBINFO_DEFAULT (FBINFO_DEFAULT \
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