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mac80211: rt2x00: remove eeprom filename dependency from mtd-eeprom

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The ralink,mtd-eeprom device tree property doesn't require the
ralink,eeprom property to work.

Rework the error handling and user notification as well. Do not log an
error if the mtd-eeprom parameter isn't used. It could be intentional
and should not scare the user.

Check if the number of bytes read from the mtd devices matches the
requested number of bytes.

In case of an mtd read error, give a hint to the user which partition
was tried to read from.

In case everything is fine, notify the user as well.

Signed-off-by: Mathias Kresin <dev@kresin.me>
This commit is contained in:
Mathias Kresin 2016-11-04 07:43:39 +01:00 committed by John Crispin
parent 2516c0572e
commit 7f235df571
1 changed files with 15 additions and 12 deletions
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27
package/kernel/mac80211/patches/605-rt2x00-load-eeprom-on-SoC-from-a-mtd-device-defines-.patch
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@ -6,9 +6,9 @@ Subject: [PATCH] rt2x00: load eeprom on SoC from a mtd device defines inside
Signed-off-by: John Crispin <blogic@openwrt.org>
---
drivers/net/wireless/ralink/rt2x00/Kconfig | 1 +
drivers/net/wireless/ralink/rt2x00/rt2800pci.c | 44 ++++++++++++++++++++++++++-----
2 files changed, 39 insertions(+), 6 deletions(-)
drivers/net/wireless/ralink/rt2x00/Kconfig | 1 +
drivers/net/wireless/ralink/rt2x00/rt2x00eeprom.c | 61 +++++++++++++++++++++++
2 files changed, 62 insertions(+)
--- a/drivers/net/wireless/ralink/rt2x00/Kconfig
+++ b/drivers/net/wireless/ralink/rt2x00/Kconfig
@ -22,7 +22,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
Supported chips: RT2880, RT3050, RT3052, RT3350, RT3352.
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00eeprom.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00eeprom.c
@@ -26,11 +26,66 @@
@@ -26,11 +26,69 @@
#include <linux/kernel.h>
#include <linux/module.h>
@ -47,10 +47,8 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ phandle phandle;
+
+ list = of_get_property(np, "ralink,mtd-eeprom", &size);
+ if (!list) {
+ dev_err(rt2x00dev->dev, "failed to load eeprom property\n");
+ if (!list)
+ return -ENOENT;
+ }
+
+ phandle = be32_to_cpup(list++);
+ if (phandle)
@ -76,11 +74,16 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ ret = mtd_read(mtd, offset, len, &retlen, (u_char *) rt2x00dev->eeprom);
+ put_mtd_device(mtd);
+
+ if (!ret) {
+ rt2x00dev->eeprom_file = &mtd_fw;
+ mtd_fw.size = len;
+ mtd_fw.data = (const u8 *) rt2x00dev->eeprom;
+ if ((retlen != rt2x00dev->ops->eeprom_size) || ret) {
+ dev_err(rt2x00dev->dev, "failed to load eeprom from device \"%s\"\n", part);
+ return ret;
+ }
+
+ rt2x00dev->eeprom_file = &mtd_fw;
+ mtd_fw.size = len;
+ mtd_fw.data = (const u8 *) rt2x00dev->eeprom;
+
+ dev_info(rt2x00dev->dev, "loaded eeprom from mtd device \"%s\"\n", part);
+#endif
+
+ return ret;
@ -89,7 +92,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
static const char *
rt2x00lib_get_eeprom_file_name(struct rt2x00_dev *rt2x00dev)
{
@@ -58,6 +113,9 @@ static int rt2x00lib_request_eeprom_file
@@ -58,6 +116,9 @@ static int rt2x00lib_request_eeprom_file
const char *ee_name;
int retval;