From 28a3cb3ca3cb7ad36b137d8eaae408948e9815b5 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Tue, 24 Oct 2006 18:05:05 +0000 Subject: [PATCH] add fix for samsung flash chips SVN-Revision: 5284 --- .../patches/007-samsung_flash.patch | 38 +++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 target/linux/generic-2.6/patches/007-samsung_flash.patch diff --git a/target/linux/generic-2.6/patches/007-samsung_flash.patch b/target/linux/generic-2.6/patches/007-samsung_flash.patch new file mode 100644 index 0000000000..93e371fa92 --- /dev/null +++ b/target/linux/generic-2.6/patches/007-samsung_flash.patch @@ -0,0 +1,38 @@ +--- linux.old/drivers/mtd/chips/cfi_cmdset_0002.c 2006-10-23 21:14:11.618024794 +0200 ++++ linux.dev/drivers/mtd/chips/cfi_cmdset_0002.c 2006-10-24 07:47:52.267007586 +0200 +@@ -49,6 +49,7 @@ + #define MANUFACTURER_SST 0x00BF + #define SST49LF004B 0x0060 + #define SST49LF008A 0x005a ++#define MANUFACTURER_SAMSUNG 0x00ec + + static int cfi_amdstd_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *); + static int cfi_amdstd_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *); +@@ -254,13 +255,20 @@ + } + + if (extp->MajorVersion != '1' || +- (extp->MinorVersion < '0' || extp->MinorVersion > '4')) { +- printk(KERN_ERR " Unknown Amd/Fujitsu Extended Query " +- "version %c.%c.\n", extp->MajorVersion, +- extp->MinorVersion); +- kfree(extp); +- kfree(mtd); +- return NULL; ++ (extp->MinorVersion < '0' || extp->MinorVersion > '4')) { ++ if (cfi->mfr == MANUFACTURER_SAMSUNG && ++ (extp->MajorVersion == '3' && extp->MinorVersion == '3')) { ++ printk(KERN_NOTICE " Newer Samsung flash detected, " ++ "should be compatibile with Amd/Fujitsu.\n"); ++ } ++ else { ++ printk(KERN_ERR " Unknown Amd/Fujitsu Extended Query " ++ "version %c.%c.\n", extp->MajorVersion, ++ extp->MinorVersion); ++ kfree(extp); ++ kfree(mtd); ++ return NULL; ++ } + } + + /* Install our own private info structure */