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[kernel] add a chip_fixup function to the plat_nand driver

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11375 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg 2008-06-06 09:01:33 +00:00
parent 33d5882433
commit 878aef47eb
2 changed files with 64 additions and 0 deletions
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32
target/linux/generic-2.6/patches-2.6.24/080-mtd_plat_nand_chip_fixup.patch Normal file
View File

@ -0,0 +1,32 @@
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -573,6 +573,7 @@
int chip_delay;
unsigned int options;
const char **part_probe_types;
+ int (*chip_fixup)(struct mtd_info *mtd);
void *priv;
};
--- a/drivers/mtd/nand/plat_nand.c
+++ b/drivers/mtd/nand/plat_nand.c
@@ -70,7 +70,18 @@
platform_set_drvdata(pdev, data);
/* Scan to find existance of the device */
- if (nand_scan(&data->mtd, 1)) {
+ if (nand_scan_ident(&data->mtd, 1)) {
+ res = -ENXIO;
+ goto out;
+ }
+
+ if (pdata->chip.chip_fixup) {
+ res = pdata->chip.chip_fixup(&data->mtd);
+ if (res)
+ goto out;
+ }
+
+ if (nand_scan_tail(&data->mtd)) {
res = -ENXIO;
goto out;
}

32
target/linux/generic-2.6/patches-2.6.25/080-mtd_plat_nand_chip_fixup.patch Normal file
View File

@ -0,0 +1,32 @@
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -573,6 +573,7 @@
int chip_delay;
unsigned int options;
const char **part_probe_types;
+ int (*chip_fixup)(struct mtd_info *mtd);
void *priv;
};
--- a/drivers/mtd/nand/plat_nand.c
+++ b/drivers/mtd/nand/plat_nand.c
@@ -70,7 +70,18 @@
platform_set_drvdata(pdev, data);
/* Scan to find existance of the device */
- if (nand_scan(&data->mtd, 1)) {
+ if (nand_scan_ident(&data->mtd, 1)) {
+ res = -ENXIO;
+ goto out;
+ }
+
+ if (pdata->chip.chip_fixup) {
+ res = pdata->chip.chip_fixup(&data->mtd);
+ if (res)
+ goto out;
+ }
+
+ if (nand_scan_tail(&data->mtd)) {
res = -ENXIO;
goto out;
}