The first-gen mceusb device init code, while mostly functional, had a few
issues in it. This patch does the following:
1) removes use of magic numbers
2) eliminates mapping of memory from stack
3) makes debug spew translator functional
4) properly initializes default tx blaster mask
Signed-off-by: Jarod Wilson <ja...@redhat.com>
---
drivers/media/IR/mceusb.c | 57 ++++++++++++++++++++++++++++++++------------
1 files changed, 41 insertions(+), 16 deletions(-)
diff --git a/drivers/media/IR/mceusb.c b/drivers/media/IR/mceusb.c
index 6659cd1..ca146ad 100644
--- a/drivers/media/IR/mceusb.c
+++ b/drivers/media/IR/mceusb.c
@@ -48,6 +48,8 @@
#define USB_BUFLEN 32 /* USB reception buffer length */
#define IRBUF_SIZE 256 /* IR work buffer length */
+#define USB_CTRL_MSG_SZ 2 /* Size of usb ctrl msg on gen1 hw */
+#define MCE_G1_INIT_MSGS 40 /* Init messages on gen1 hw to throw out */
/* MCE constants */
#define MCE_CMDBUF_SIZE 384 /* MCE Command buffer length */
@@ -300,11 +302,13 @@ static void mceusb_dev_printdata(struct mceusb_dev *ir,
char *buf,
int i;
u8 cmd, subcmd, data1, data2;
struct device *dev = ir->dev;
+ int idx = 0;
- if (len <= 0)
- return;
+ /* skip meaningless 0xb1 0x60 header bytes on orig receiver */
+ if (ir->flags.microsoft_gen1 && !out)
+ idx = 2;
- if (ir->flags.microsoft_gen1 && len <= 2)
+ if (len <= idx)
return;
for (i = 0; i < len && i < USB_BUFLEN; i++)
@@ -318,10 +322,10 @@ static void mceusb_dev_printdata(struct mceusb_dev *ir,
char *buf,
else
strcpy(inout, "Got\0");
- cmd = buf[0] & 0xff;
- subcmd = buf[1] & 0xff;
- data1 = buf[2] & 0xff;
- data2 = buf[3] & 0xff;
+ cmd = buf[idx] & 0xff;
+ subcmd = buf[idx + 1] & 0xff;
+ data1 = buf[idx + 2] & 0xff;
+ data2 = buf[idx + 3] & 0xff;
switch (cmd) {
case 0x00:
@@ -339,7 +343,7 @@ static void mceusb_dev_printdata(struct mceusb_dev *ir,
char *buf,
else
dev_info(dev, "hw/sw rev 0x%02x 0x%02x "
"0x%02x 0x%02x\n", data1, data2,
- buf[4], buf[5]);
+ buf[idx + 4], buf[idx + 5]);
break;
case 0xaa:
dev_info(dev, "Device reset requested\n");
@@ -705,6 +709,13 @@ static void mceusb_set_default_tx_mask(struct urb *urb)
char *buffer = urb->transfer_buffer;
u8 cmd, subcmd, def_tx_mask;
+ /* default mask isn't fetchable on gen1, we have to set it */
+ if (ir->flags.microsoft_gen1) {
+ ir->def_tx_mask = MCE_DEFAULT_TX_MASK;
+ ir->tx_mask = MCE_DEFAULT_TX_MASK;
+ return;
+ }
+
cmd = buffer[0] & 0xff;
subcmd = buffer[1] & 0xff;
@@ -769,27 +780,38 @@ static void mceusb_dev_recv(struct urb *urb, struct
pt_regs *regs)
static void mceusb_gen1_init(struct mceusb_dev *ir)
{
int i, ret;
- char junk[64], data[8];
int partial = 0;
struct device *dev = ir->dev;
+ char *junk, *data;
+
+ junk = kmalloc(2 * USB_BUFLEN, GFP_KERNEL);
+ if (!junk) {
+ dev_err(dev, "%s: memory allocation failed!\n", __func__);
+ return;
+ }
+
+ data = kzalloc(USB_CTRL_MSG_SZ, GFP_KERNEL);
+ if (!data) {
+ dev_err(dev, "%s: memory allocation failed!\n", __func__);
+ kfree(junk);
+ return;
+ }
/*
* Clear off the first few messages. These look like calibration
* or test data, I can't really tell. This also flushes in case
* we have random ir data queued up.
*/
- for (i = 0; i < 40; i++)
+ for (i = 0; i < MCE_G1_INIT_MSGS; i++)
usb_bulk_msg(ir->usbdev,
usb_rcvbulkpipe(ir->usbdev,
ir->usb_ep_in->bEndpointAddress),
- junk, 64, &partial, HZ * 10);
-
- memset(data, 0, 8);
+ junk, sizeof(junk), &partial, HZ * 10);
/* Get Status */
ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
USB_REQ_GET_STATUS, USB_DIR_IN,
- 0, 0, data, 2, HZ * 3);
+ 0, 0, data, USB_CTRL_MSG_SZ, HZ * 3);
/* ret = usb_get_status( ir->usbdev, 0, 0, data ); */
dev_dbg(dev, "%s - ret = %d status = 0x%x 0x%x\n", __func__,
@@ -799,11 +821,11 @@ static void mceusb_gen1_init(struct mceusb_dev *ir)
* This is a strange one. They issue a set address to the device
* on the receive control pipe and expect a certain value pair back
*/
- memset(data, 0, 8);
+ memset(data, 0, sizeof(data));
ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0,
- data, 2, HZ * 3);
+ data, USB_CTRL_MSG_SZ, HZ * 3);
dev_dbg(dev, "%s - ret = %d\n", __func__, ret);
dev_dbg(dev, "%s - data[0] = %d, data[1] = %d\n",
__func__, data[0], data[1]);
@@ -826,6 +848,9 @@ static void mceusb_gen1_init(struct mceusb_dev *ir)
2, USB_TYPE_VENDOR,
0x0000, 0x0100, NULL, 0, HZ * 3);
dev_dbg(dev, "%s - retC = %d\n", __func__, ret);
+
+ kfree(data);
+ kfree(junk);
};
static void mceusb_gen2_init(struct mceusb_dev *ir)
--
Jarod Wilson
ja...@redhat.com
--
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