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authorMike Isely <isely@pobox.com>2007-02-08 02:02:53 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2007-02-21 13:35:20 -0200
commit90060d32ca0a941b158994f78e60d0381871c84b (patch)
treea9a53401ee59fd2e14e57e50bc92e48ed98ca8e8 /drivers
parent201779f5c4a4bd8503a38749dd371ecddb7928a5 (diff)
downloadop-kernel-dev-90060d32ca0a941b158994f78e60d0381871c84b.zip
op-kernel-dev-90060d32ca0a941b158994f78e60d0381871c84b.tar.gz
V4L/DVB (5212): Pvrusb2: Be more forgiving about encoder firmware size
The pvrusb2 driver previously rejected encoder firmware whose size was not a multiple of 8192. But this is a false check because it's possible to find cx23416 firmware whose size doesn't conform to this limit. So change the firmware loader implementation to be more forgiving of the image size. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/media/video/pvrusb2/pvrusb2-hdw.c33
1 files changed, 18 insertions, 15 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index 40b2f2a..a1ca0f5 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -1209,7 +1209,7 @@ int pvr2_upload_firmware2(struct pvr2_hdw *hdw)
{
const struct firmware *fw_entry = NULL;
void *fw_ptr;
- unsigned int pipe, fw_len, fw_done;
+ unsigned int pipe, fw_len, fw_done, bcnt, icnt;
int actual_length;
int ret = 0;
int fwidx;
@@ -1265,11 +1265,11 @@ int pvr2_upload_firmware2(struct pvr2_hdw *hdw)
fw_len = fw_entry->size;
- if (fw_len % FIRMWARE_CHUNK_SIZE) {
+ if (fw_len % sizeof(u32)) {
pvr2_trace(PVR2_TRACE_ERROR_LEGS,
"size of %s firmware"
- " must be a multiple of 8192B",
- fw_files[fwidx]);
+ " must be a multiple of %u bytes",
+ fw_files[fwidx],sizeof(u32));
release_firmware(fw_entry);
return -1;
}
@@ -1284,18 +1284,21 @@ int pvr2_upload_firmware2(struct pvr2_hdw *hdw)
pipe = usb_sndbulkpipe(hdw->usb_dev, PVR2_FIRMWARE_ENDPOINT);
- for (fw_done = 0 ; (fw_done < fw_len) && !ret ;
- fw_done += FIRMWARE_CHUNK_SIZE ) {
- int i;
- memcpy(fw_ptr, fw_entry->data + fw_done, FIRMWARE_CHUNK_SIZE);
- /* Usbsnoop log shows that we must swap bytes... */
- for (i = 0; i < FIRMWARE_CHUNK_SIZE/4 ; i++)
- ((u32 *)fw_ptr)[i] = ___swab32(((u32 *)fw_ptr)[i]);
-
- ret |= usb_bulk_msg(hdw->usb_dev, pipe, fw_ptr,
- FIRMWARE_CHUNK_SIZE,
+ fw_done = 0;
+ for (fw_done = 0; fw_done < fw_len;) {
+ bcnt = fw_len - fw_done;
+ if (bcnt > FIRMWARE_CHUNK_SIZE) bcnt = FIRMWARE_CHUNK_SIZE;
+ memcpy(fw_ptr, fw_entry->data + fw_done, bcnt);
+ /* Usbsnoop log shows that we must swap bytes... */
+ for (icnt = 0; icnt < bcnt/4 ; icnt++)
+ ((u32 *)fw_ptr)[icnt] =
+ ___swab32(((u32 *)fw_ptr)[icnt]);
+
+ ret |= usb_bulk_msg(hdw->usb_dev, pipe, fw_ptr,bcnt,
&actual_length, HZ);
- ret |= (actual_length != FIRMWARE_CHUNK_SIZE);
+ ret |= (actual_length != bcnt);
+ if (ret) break;
+ fw_done += bcnt;
}
trace_firmware("upload of %s : %i / %i ",
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