[PATCH] Fix stack usage for amd_flash.c
Joern Engel
joern at wohnheim.fh-wedel.de
Fri Mar 14 10:46:42 EST 2003
Hi!
This patch reduces the stack usage of amd_flash_probe by a couple of
kByte. The target of freeing the memory after probe should be reached
with __initdata as well. Untested, though.
Is it ok to apply?
Jörn
--
My second remark is that our intellectual powers are rather geared to
master static relations and that our powers to visualize processes
evolving in time are relatively poorly developed.
-- Edsger W. Dijkstra
--- linux-2.5.64/drivers/mtd/chips/amd_flash.c Wed Mar 12 14:16:34 2003
+++ linux-2.5.64-i2o/drivers/mtd/chips/amd_flash.c Thu Mar 13 13:18:10 2003
@@ -417,205 +417,202 @@
-static struct mtd_info *amd_flash_probe(struct map_info *map)
+const __initdata struct amd_flash_info table[] = {
{
- /* Keep this table on the stack so that it gets deallocated after the
- * probe is done.
- */
- const struct amd_flash_info table[] = {
- {
- .mfr_id = MANUFACTURER_AMD,
- .dev_id = AM29LV160DT,
- .name = "AMD AM29LV160DT",
- .size = 0x00200000,
- .numeraseregions = 4,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
- { .offset = 0x1F0000, .erasesize = 0x08000, .numblocks = 1 },
- { .offset = 0x1F8000, .erasesize = 0x02000, .numblocks = 2 },
- { .offset = 0x1FC000, .erasesize = 0x04000, .numblocks = 1 }
- }
- }, {
- .mfr_id = MANUFACTURER_AMD,
- .dev_id = AM29LV160DB,
- .name = "AMD AM29LV160DB",
- .size = 0x00200000,
- .numeraseregions = 4,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
- { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
- { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
- { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
- }
- }, {
- .mfr_id = MANUFACTURER_TOSHIBA,
- .dev_id = TC58FVT160,
- .name = "Toshiba TC58FVT160",
- .size = 0x00200000,
- .numeraseregions = 4,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
- { .offset = 0x1F0000, .erasesize = 0x08000, .numblocks = 1 },
- { .offset = 0x1F8000, .erasesize = 0x02000, .numblocks = 2 },
- { .offset = 0x1FC000, .erasesize = 0x04000, .numblocks = 1 }
- }
- }, {
- .mfr_id = MANUFACTURER_FUJITSU,
- .dev_id = MBM29LV160TE,
- .name = "Fujitsu MBM29LV160TE",
- .size = 0x00200000,
- .numeraseregions = 4,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
- { .offset = 0x1F0000, .erasesize = 0x08000, .numblocks = 1 },
- { .offset = 0x1F8000, .erasesize = 0x02000, .numblocks = 2 },
- { .offset = 0x1FC000, .erasesize = 0x04000, .numblocks = 1 }
- }
- }, {
- .mfr_id = MANUFACTURER_TOSHIBA,
- .dev_id = TC58FVB160,
- .name = "Toshiba TC58FVB160",
- .size = 0x00200000,
- .numeraseregions = 4,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
- { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
- { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
- { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
- }
- }, {
- .mfr_id = MANUFACTURER_FUJITSU,
- .dev_id = MBM29LV160BE,
- .name = "Fujitsu MBM29LV160BE",
- .size = 0x00200000,
- .numeraseregions = 4,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
- { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
- { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
- { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
- }
- }, {
- .mfr_id = MANUFACTURER_AMD,
- .dev_id = AM29LV800BB,
- .name = "AMD AM29LV800BB",
- .size = 0x00100000,
- .numeraseregions = 4,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
- { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
- { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
- { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 15 }
- }
- }, {
- .mfr_id = MANUFACTURER_AMD,
- .dev_id = AM29F800BB,
- .name = "AMD AM29F800BB",
- .size = 0x00100000,
- .numeraseregions = 4,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
- { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
- { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
- { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 15 }
- }
- }, {
- .mfr_id = MANUFACTURER_AMD,
- .dev_id = AM29LV800BT,
- .name = "AMD AM29LV800BT",
- .size = 0x00100000,
- .numeraseregions = 4,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
- { .offset = 0x0F0000, .erasesize = 0x08000, .numblocks = 1 },
- { .offset = 0x0F8000, .erasesize = 0x02000, .numblocks = 2 },
- { .offset = 0x0FC000, .erasesize = 0x04000, .numblocks = 1 }
- }
- }, {
- .mfr_id = MANUFACTURER_AMD,
- .dev_id = AM29F800BT,
- .name = "AMD AM29F800BT",
- .size = 0x00100000,
- .numeraseregions = 4,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
- { .offset = 0x0F0000, .erasesize = 0x08000, .numblocks = 1 },
- { .offset = 0x0F8000, .erasesize = 0x02000, .numblocks = 2 },
- { .offset = 0x0FC000, .erasesize = 0x04000, .numblocks = 1 }
- }
- }, {
- .mfr_id = MANUFACTURER_AMD,
- .dev_id = AM29LV800BB,
- .name = "AMD AM29LV800BB",
- .size = 0x00100000,
- .numeraseregions = 4,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
- { .offset = 0x0F0000, .erasesize = 0x08000, .numblocks = 1 },
- { .offset = 0x0F8000, .erasesize = 0x02000, .numblocks = 2 },
- { .offset = 0x0FC000, .erasesize = 0x04000, .numblocks = 1 }
- }
- }, {
- .mfr_id = MANUFACTURER_ST,
- .dev_id = M29W800T,
- .name = "ST M29W800T",
- .size = 0x00100000,
- .numeraseregions = 4,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
- { .offset = 0x0F0000, .erasesize = 0x08000, .numblocks = 1 },
- { .offset = 0x0F8000, .erasesize = 0x02000, .numblocks = 2 },
- { .offset = 0x0FC000, .erasesize = 0x04000, .numblocks = 1 }
- }
- }, {
- .mfr_id = MANUFACTURER_ST,
- .dev_id = M29W160DT,
- .name = "ST M29W160DT",
- .size = 0x00200000,
- .numeraseregions = 4,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
- { .offset = 0x1F0000, .erasesize = 0x08000, .numblocks = 1 },
- { .offset = 0x1F8000, .erasesize = 0x02000, .numblocks = 2 },
- { .offset = 0x1FC000, .erasesize = 0x04000, .numblocks = 1 }
- }
- }, {
- .mfr_id = MANUFACTURER_ST,
- .dev_id = M29W160DB,
- .name = "ST M29W160DB",
- .size = 0x00200000,
- .numeraseregions = 4,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
- { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
- { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
- { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
- }
- }, {
- .mfr_id = MANUFACTURER_AMD,
- .dev_id = AM29BDS323D,
- .name = "AMD AM29BDS323D",
- .size = 0x00400000,
- .numeraseregions = 3,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 48 },
- { .offset = 0x300000, .erasesize = 0x10000, .numblocks = 15 },
- { .offset = 0x3f0000, .erasesize = 0x02000, .numblocks = 8 },
- }
- }, {
- .mfr_id = MANUFACTURER_AMD,
- .dev_id = AM29BDS643D,
- .name = "AMD AM29BDS643D",
- .size = 0x00800000,
- .numeraseregions = 3,
- .regions = {
- { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 96 },
- { .offset = 0x600000, .erasesize = 0x10000, .numblocks = 31 },
- { .offset = 0x7f0000, .erasesize = 0x02000, .numblocks = 8 },
- }
- }
- };
+ .mfr_id = MANUFACTURER_AMD,
+ .dev_id = AM29LV160DT,
+ .name = "AMD AM29LV160DT",
+ .size = 0x00200000,
+ .numeraseregions = 4,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
+ { .offset = 0x1F0000, .erasesize = 0x08000, .numblocks = 1 },
+ { .offset = 0x1F8000, .erasesize = 0x02000, .numblocks = 2 },
+ { .offset = 0x1FC000, .erasesize = 0x04000, .numblocks = 1 }
+ }
+}, {
+ .mfr_id = MANUFACTURER_AMD,
+ .dev_id = AM29LV160DB,
+ .name = "AMD AM29LV160DB",
+ .size = 0x00200000,
+ .numeraseregions = 4,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
+ { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
+ { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
+ { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
+ }
+}, {
+ .mfr_id = MANUFACTURER_TOSHIBA,
+ .dev_id = TC58FVT160,
+ .name = "Toshiba TC58FVT160",
+ .size = 0x00200000,
+ .numeraseregions = 4,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
+ { .offset = 0x1F0000, .erasesize = 0x08000, .numblocks = 1 },
+ { .offset = 0x1F8000, .erasesize = 0x02000, .numblocks = 2 },
+ { .offset = 0x1FC000, .erasesize = 0x04000, .numblocks = 1 }
+ }
+}, {
+ .mfr_id = MANUFACTURER_FUJITSU,
+ .dev_id = MBM29LV160TE,
+ .name = "Fujitsu MBM29LV160TE",
+ .size = 0x00200000,
+ .numeraseregions = 4,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
+ { .offset = 0x1F0000, .erasesize = 0x08000, .numblocks = 1 },
+ { .offset = 0x1F8000, .erasesize = 0x02000, .numblocks = 2 },
+ { .offset = 0x1FC000, .erasesize = 0x04000, .numblocks = 1 }
+ }
+}, {
+ .mfr_id = MANUFACTURER_TOSHIBA,
+ .dev_id = TC58FVB160,
+ .name = "Toshiba TC58FVB160",
+ .size = 0x00200000,
+ .numeraseregions = 4,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
+ { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
+ { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
+ { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
+ }
+}, {
+ .mfr_id = MANUFACTURER_FUJITSU,
+ .dev_id = MBM29LV160BE,
+ .name = "Fujitsu MBM29LV160BE",
+ .size = 0x00200000,
+ .numeraseregions = 4,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
+ { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
+ { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
+ { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
+ }
+}, {
+ .mfr_id = MANUFACTURER_AMD,
+ .dev_id = AM29LV800BB,
+ .name = "AMD AM29LV800BB",
+ .size = 0x00100000,
+ .numeraseregions = 4,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
+ { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
+ { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
+ { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 15 }
+ }
+}, {
+ .mfr_id = MANUFACTURER_AMD,
+ .dev_id = AM29F800BB,
+ .name = "AMD AM29F800BB",
+ .size = 0x00100000,
+ .numeraseregions = 4,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
+ { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
+ { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
+ { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 15 }
+ }
+}, {
+ .mfr_id = MANUFACTURER_AMD,
+ .dev_id = AM29LV800BT,
+ .name = "AMD AM29LV800BT",
+ .size = 0x00100000,
+ .numeraseregions = 4,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
+ { .offset = 0x0F0000, .erasesize = 0x08000, .numblocks = 1 },
+ { .offset = 0x0F8000, .erasesize = 0x02000, .numblocks = 2 },
+ { .offset = 0x0FC000, .erasesize = 0x04000, .numblocks = 1 }
+ }
+}, {
+ .mfr_id = MANUFACTURER_AMD,
+ .dev_id = AM29F800BT,
+ .name = "AMD AM29F800BT",
+ .size = 0x00100000,
+ .numeraseregions = 4,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
+ { .offset = 0x0F0000, .erasesize = 0x08000, .numblocks = 1 },
+ { .offset = 0x0F8000, .erasesize = 0x02000, .numblocks = 2 },
+ { .offset = 0x0FC000, .erasesize = 0x04000, .numblocks = 1 }
+ }
+}, {
+ .mfr_id = MANUFACTURER_AMD,
+ .dev_id = AM29LV800BB,
+ .name = "AMD AM29LV800BB",
+ .size = 0x00100000,
+ .numeraseregions = 4,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
+ { .offset = 0x0F0000, .erasesize = 0x08000, .numblocks = 1 },
+ { .offset = 0x0F8000, .erasesize = 0x02000, .numblocks = 2 },
+ { .offset = 0x0FC000, .erasesize = 0x04000, .numblocks = 1 }
+ }
+}, {
+ .mfr_id = MANUFACTURER_ST,
+ .dev_id = M29W800T,
+ .name = "ST M29W800T",
+ .size = 0x00100000,
+ .numeraseregions = 4,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 15 },
+ { .offset = 0x0F0000, .erasesize = 0x08000, .numblocks = 1 },
+ { .offset = 0x0F8000, .erasesize = 0x02000, .numblocks = 2 },
+ { .offset = 0x0FC000, .erasesize = 0x04000, .numblocks = 1 }
+ }
+}, {
+ .mfr_id = MANUFACTURER_ST,
+ .dev_id = M29W160DT,
+ .name = "ST M29W160DT",
+ .size = 0x00200000,
+ .numeraseregions = 4,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 31 },
+ { .offset = 0x1F0000, .erasesize = 0x08000, .numblocks = 1 },
+ { .offset = 0x1F8000, .erasesize = 0x02000, .numblocks = 2 },
+ { .offset = 0x1FC000, .erasesize = 0x04000, .numblocks = 1 }
+ }
+}, {
+ .mfr_id = MANUFACTURER_ST,
+ .dev_id = M29W160DB,
+ .name = "ST M29W160DB",
+ .size = 0x00200000,
+ .numeraseregions = 4,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x04000, .numblocks = 1 },
+ { .offset = 0x004000, .erasesize = 0x02000, .numblocks = 2 },
+ { .offset = 0x008000, .erasesize = 0x08000, .numblocks = 1 },
+ { .offset = 0x010000, .erasesize = 0x10000, .numblocks = 31 }
+ }
+}, {
+ .mfr_id = MANUFACTURER_AMD,
+ .dev_id = AM29BDS323D,
+ .name = "AMD AM29BDS323D",
+ .size = 0x00400000,
+ .numeraseregions = 3,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 48 },
+ { .offset = 0x300000, .erasesize = 0x10000, .numblocks = 15 },
+ { .offset = 0x3f0000, .erasesize = 0x02000, .numblocks = 8 },
+ }
+}, {
+ .mfr_id = MANUFACTURER_AMD,
+ .dev_id = AM29BDS643D,
+ .name = "AMD AM29BDS643D",
+ .size = 0x00800000,
+ .numeraseregions = 3,
+ .regions = {
+ { .offset = 0x000000, .erasesize = 0x10000, .numblocks = 96 },
+ { .offset = 0x600000, .erasesize = 0x10000, .numblocks = 31 },
+ { .offset = 0x7f0000, .erasesize = 0x02000, .numblocks = 8 },
+ }
+}
+};
+static struct mtd_info *amd_flash_probe(struct map_info *map)
+{
struct mtd_info *mtd;
struct flchip chips[MAX_AMD_CHIPS];
int table_pos[MAX_AMD_CHIPS];
More information about the linux-mtd
mailing list