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authorDavid Woodhouse <dwmw2@infradead.org>2008-05-24 00:12:42 +0100
committerDavid Woodhouse <David.Woodhouse@intel.com>2008-07-10 14:26:33 +0100
commite62f89f2aebd57f48687f139c20cf6375693b622 (patch)
tree9c159b34b986aac8a3791a645cd5dbc989ca3cb2 /drivers/media/dvb
parentbc179153ae2334efe28cf4f3300e024da7d83753 (diff)
cxusb: treat firmware data as const
...which means allocating our own copy when we want to modify it. (stupid thinko fixed by mkrufky) Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Diffstat (limited to 'drivers/media/dvb')
-rw-r--r--drivers/media/dvb/dvb-usb/cxusb.c21
1 files changed, 18 insertions, 3 deletions
diff --git a/drivers/media/dvb/dvb-usb/cxusb.c b/drivers/media/dvb/dvb-usb/cxusb.c
index 720fcd1c3c1..0286156704f 100644
--- a/drivers/media/dvb/dvb-usb/cxusb.c
+++ b/drivers/media/dvb/dvb-usb/cxusb.c
@@ -24,6 +24,7 @@
* see Documentation/dvb/README.dvb-usb for more information
*/
#include <media/tuner.h>
+#include <linux/vmalloc.h>
#include "cxusb.h"
@@ -700,12 +701,26 @@ static int bluebird_patch_dvico_firmware_download(struct usb_device *udev,
if (fw->data[idoff] == (USB_VID_DVICO & 0xff) &&
fw->data[idoff + 1] == USB_VID_DVICO >> 8) {
- fw->data[idoff + 2] =
+ struct firmware new_fw;
+ u8 *new_fw_data = vmalloc(fw->size);
+ int ret;
+
+ if (!new_fw_data)
+ return -ENOMEM;
+
+ memcpy(new_fw_data, fw->data, fw->size);
+ new_fw.size = fw->size;
+ new_fw.data = new_fw_data;
+
+ new_fw_data[idoff + 2] =
le16_to_cpu(udev->descriptor.idProduct) + 1;
- fw->data[idoff + 3] =
+ new_fw_data[idoff + 3] =
le16_to_cpu(udev->descriptor.idProduct) >> 8;
- return usb_cypress_load_firmware(udev, fw, CYPRESS_FX2);
+ ret = usb_cypress_load_firmware(udev, &new_fw,
+ CYPRESS_FX2);
+ vfree(new_fw_data);
+ return ret;
}
}