firmware: Sigma: Fix endianess issues

commit bda63586bc5929e97288cdb371bb6456504867ed upstream.

Currently the SigmaDSP firmware loader only works correctly on little-endian
systems. Fix this by using the proper endianess conversion functions.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/firmware/sigma.c b/drivers/firmware/sigma.c
index 36265de..1eedb6f 100644 (file)
--- a/drivers/firmware/sigma.c
+++ b/drivers/firmware/sigma.c
@@ -133,7 +133,7 @@ int process_sigma_firmware(struct i2c_client *client, const char *name)
        crc = crc32(0, fw->data + sizeof(*ssfw_head),
                        fw->size - sizeof(*ssfw_head));
        pr_debug("%s: crc=%x\n", __func__, crc);
-       if (crc != ssfw_head->crc)
+       if (crc != le32_to_cpu(ssfw_head->crc))
                goto done;
 
        ssfw.pos = sizeof(*ssfw_head);

diff --git a/include/linux/sigma.h b/include/linux/sigma.h
index 9a138c2..d0de882 100644 (file)
--- a/include/linux/sigma.h
+++ b/include/linux/sigma.h
@@ -24,7 +24,7 @@ struct sigma_firmware {
 struct sigma_firmware_header {
        unsigned char magic[7];
        u8 version;
-       u32 crc;
+       __le32 crc;
 };
 
 enum {
@@ -40,14 +40,14 @@ enum {
 struct sigma_action {
        u8 instr;
        u8 len_hi;
-       u16 len;
-       u16 addr;
+       __le16 len;
+       __be16 addr;
        unsigned char payload[];
 };
 
 static inline u32 sigma_action_len(struct sigma_action *sa)
 {
-       return (sa->len_hi << 16) | sa->len;
+       return (sa->len_hi << 16) | le16_to_cpu(sa->len);
 }
 
 extern int process_sigma_firmware(struct i2c_client *client, const char *name);