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PRD_ENTRIES is specified to be precisely 256; on platforms where PAGE_SIZE varies from 4KB the calculation in the current expression defining it is inaccurate, which may cause crashes. This patch changes it to the constant literal 256. -- wli ===== include/linux/ide.h 1.88 vs edited ===== --- 1.88/include/linux/ide.h Tue Feb 10 07:35:39 2004 +++ edited/include/linux/ide.h Wed Feb 25 01:46:45 2004 @@ -224,7 +224,7 @@ * allowing each to have about 256 entries (8 bytes each) from this. */ #define PRD_BYTES 8 -#define PRD_ENTRIES (PAGE_SIZE / (2 * PRD_BYTES)) +#define PRD_ENTRIES 256 /* * Some more useful definitions - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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