wl1271: Add support for NVS files with 5GHz band parameters

This patch adds support for NVS files with 5GHz band parameters. The change
is done in a backward compatible manner - if 11a is not enabled in the driver,
the driver will allow also old NVS files to be loaded.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 10 insertions, 3 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c
index b7d9137851ac..5568f559a16b 100644
--- a/drivers/net/wireless/wl12xx/wl1271_main.c
+++ b/drivers/net/wireless/wl12xx/wl1271_main.c
@@ -566,14 +566,21 @@ static int wl1271_fetch_nvs(struct wl1271 *wl)
                 return ret;
         }
 
-        if (fw->size != sizeof(struct wl1271_nvs_file)) {
+        /*
+         * FIXME: the LEGACY NVS image support (NVS's missing the 5GHz band
+         * configurations) can be removed when those NVS files stop floating
+         * around.
+         */
+        if (fw->size != sizeof(struct wl1271_nvs_file) &&
+            (fw->size != WL1271_INI_LEGACY_NVS_FILE_SIZE ||
+             wl1271_11a_enabled())) {
                 wl1271_error("nvs size is not as expected: %zu != %zu",
                              fw->size, sizeof(struct wl1271_nvs_file));
                 ret = -EILSEQ;
                 goto out;
         }
 
-        wl->nvs = kmalloc(sizeof(struct wl1271_nvs_file), GFP_KERNEL);
+        wl->nvs = kzalloc(sizeof(struct wl1271_nvs_file), GFP_KERNEL);
 
         if (!wl->nvs) {
                 wl1271_error("could not allocate memory for the nvs file");
@@ -581,7 +588,7 @@ static int wl1271_fetch_nvs(struct wl1271 *wl)
                 goto out;
         }
 
-        memcpy(wl->nvs, fw->data, sizeof(struct wl1271_nvs_file));
+        memcpy(wl->nvs, fw->data, fw->size);
 
 out:
         release_firmware(fw);