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authorIvo van Doorn <ivdoorn@gmail.com>2008-03-09 22:44:54 +0100
committerJohn W. Linville <linville@tuxdriver.com>2008-03-13 16:02:36 -0400
commita7f3a06cbb63a16ad7a1720506591d8d12a03029 (patch)
tree8aa483a960b4ac9de30e6e1fcb28fdd900cde247 /drivers/net/wireless/rt2x00/rt2x00firmware.c
parent5f46c4d0537a870f9d9c1fd998aa9d6dac682595 (diff)
rt2x00: Move firmware checksumming to driver
rt2x00lib depended on 2 crc algorithms because rt61/rt73 use a different algorithm then rt2800. This means that even when only 1 algorithm was needed, the dependency was still present for both. By moving the checksum generation to the driver we can clean up 2 annoying flags (which indicated which checksum was required) and move the dependency to where it belongs: the driver. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00firmware.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00firmware.c34
1 files changed, 1 insertions, 33 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00firmware.c b/drivers/net/wireless/rt2x00/rt2x00firmware.c
index 4f9fe56f4f2..b971bc6e7ee 100644
--- a/drivers/net/wireless/rt2x00/rt2x00firmware.c
+++ b/drivers/net/wireless/rt2x00/rt2x00firmware.c
@@ -23,8 +23,6 @@
Abstract: rt2x00 firmware loading routines.
*/
-#include <linux/crc-ccitt.h>
-#include <linux/crc-itu-t.h>
#include <linux/kernel.h>
#include <linux/module.h>
@@ -63,36 +61,7 @@ static int rt2x00lib_request_firmware(struct rt2x00_dev *rt2x00dev)
return -ENOENT;
}
- /*
- * Perform crc validation on the firmware.
- * The last 2 bytes in the firmware array are the crc checksum itself,
- * this means that we should never pass those 2 bytes to the crc
- * algorithm.
- */
- if (test_bit(DRIVER_REQUIRE_FIRMWARE_CRC_ITU_T, &rt2x00dev->flags)) {
- /*
- * Use the crc itu-t algorithm.
- * Use 0 for the last 2 bytes to complete the checksum.
- */
- crc = crc_itu_t(0, fw->data, fw->size - 2);
- crc = crc_itu_t_byte(crc, 0);
- crc = crc_itu_t_byte(crc, 0);
- } else if (test_bit(DRIVER_REQUIRE_FIRMWARE_CCITT, &rt2x00dev->flags)) {
- /*
- * Use the crc ccitt algorithm.
- * This will return the same value as the legacy driver which
- * used bit ordering reversion on the both the firmware bytes
- * before input input as well as on the final output.
- * Obviously using crc ccitt directly is much more efficient.
- */
- crc = crc_ccitt(~0, fw->data, fw->size - 2);
- } else {
- ERROR(rt2x00dev, "No checksum algorithm selected "
- "for firmware validation.\n");
- retval = -ENOENT;
- goto exit;
- }
-
+ crc = rt2x00dev->ops->lib->get_firmware_crc(fw->data, fw->size);
if (crc != (fw->data[fw->size - 2] << 8 | fw->data[fw->size - 1])) {
ERROR(rt2x00dev, "Firmware checksum error.\n");
retval = -ENOENT;
@@ -139,4 +108,3 @@ void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev)
release_firmware(rt2x00dev->fw);
rt2x00dev->fw = NULL;
}
-