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

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>

1 files changed, 15 insertions, 12 deletions

diff --git a/package/kernel/mac80211/patches/605-rt2x00-load-eeprom-on-SoC-from-a-mtd-device-defines-.patch b/package/kernel/mac80211/patches/605-rt2x00-load-eeprom-on-SoC-from-a-mtd-device-defines-.patch
index 5097304..6c264ef 100644
--- a/package/kernel/mac80211/patches/605-rt2x00-load-eeprom-on-SoC-from-a-mtd-device-defines-.patch
+++ b/package/kernel/mac80211/patches/605-rt2x00-load-eeprom-on-SoC-from-a-mtd-device-defines-.patch
@@ -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;