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Diffstat (limited to 'drivers/media/radio/si470x')
-rw-r--r--drivers/media/radio/si470x/radio-si470x-usb.c57
-rw-r--r--drivers/media/radio/si470x/radio-si470x.h1
2 files changed, 32 insertions, 26 deletions
diff --git a/drivers/media/radio/si470x/radio-si470x-usb.c b/drivers/media/radio/si470x/radio-si470x-usb.c
index d6d4d60261d..cd74025517e 100644
--- a/drivers/media/radio/si470x/radio-si470x-usb.c
+++ b/drivers/media/radio/si470x/radio-si470x-usb.c
@@ -137,6 +137,8 @@ MODULE_PARM_DESC(max_rds_errors, "RDS maximum block errors: *1*");
/* interrupt out endpoint 2 every 1 millisecond */
#define UNUSED_REPORT 23
+#define MAX_REPORT_SIZE 64
+
/**************************************************************************
@@ -208,7 +210,7 @@ MODULE_PARM_DESC(max_rds_errors, "RDS maximum block errors: *1*");
*/
static int si470x_get_report(struct si470x_device *radio, void *buf, int size)
{
- unsigned char *report = (unsigned char *) buf;
+ unsigned char *report = buf;
int retval;
retval = usb_control_msg(radio->usbdev,
@@ -231,7 +233,7 @@ static int si470x_get_report(struct si470x_device *radio, void *buf, int size)
*/
static int si470x_set_report(struct si470x_device *radio, void *buf, int size)
{
- unsigned char *report = (unsigned char *) buf;
+ unsigned char *report = buf;
int retval;
retval = usb_control_msg(radio->usbdev,
@@ -254,15 +256,14 @@ static int si470x_set_report(struct si470x_device *radio, void *buf, int size)
*/
int si470x_get_register(struct si470x_device *radio, int regnr)
{
- unsigned char buf[REGISTER_REPORT_SIZE];
int retval;
- buf[0] = REGISTER_REPORT(regnr);
+ radio->usb_buf[0] = REGISTER_REPORT(regnr);
- retval = si470x_get_report(radio, (void *) &buf, sizeof(buf));
+ retval = si470x_get_report(radio, radio->usb_buf, REGISTER_REPORT_SIZE);
if (retval >= 0)
- radio->registers[regnr] = get_unaligned_be16(&buf[1]);
+ radio->registers[regnr] = get_unaligned_be16(&radio->usb_buf[1]);
return (retval < 0) ? -EINVAL : 0;
}
@@ -273,13 +274,12 @@ int si470x_get_register(struct si470x_device *radio, int regnr)
*/
int si470x_set_register(struct si470x_device *radio, int regnr)
{
- unsigned char buf[REGISTER_REPORT_SIZE];
int retval;
- buf[0] = REGISTER_REPORT(regnr);
- put_unaligned_be16(radio->registers[regnr], &buf[1]);
+ radio->usb_buf[0] = REGISTER_REPORT(regnr);
+ put_unaligned_be16(radio->registers[regnr], &radio->usb_buf[1]);
- retval = si470x_set_report(radio, (void *) &buf, sizeof(buf));
+ retval = si470x_set_report(radio, radio->usb_buf, REGISTER_REPORT_SIZE);
return (retval < 0) ? -EINVAL : 0;
}
@@ -295,18 +295,17 @@ int si470x_set_register(struct si470x_device *radio, int regnr)
*/
static int si470x_get_all_registers(struct si470x_device *radio)
{
- unsigned char buf[ENTIRE_REPORT_SIZE];
int retval;
unsigned char regnr;
- buf[0] = ENTIRE_REPORT;
+ radio->usb_buf[0] = ENTIRE_REPORT;
- retval = si470x_get_report(radio, (void *) &buf, sizeof(buf));
+ retval = si470x_get_report(radio, radio->usb_buf, ENTIRE_REPORT_SIZE);
if (retval >= 0)
for (regnr = 0; regnr < RADIO_REGISTER_NUM; regnr++)
radio->registers[regnr] = get_unaligned_be16(
- &buf[regnr * RADIO_REGISTER_SIZE + 1]);
+ &radio->usb_buf[regnr * RADIO_REGISTER_SIZE + 1]);
return (retval < 0) ? -EINVAL : 0;
}
@@ -323,14 +322,13 @@ static int si470x_get_all_registers(struct si470x_device *radio)
static int si470x_set_led_state(struct si470x_device *radio,
unsigned char led_state)
{
- unsigned char buf[LED_REPORT_SIZE];
int retval;
- buf[0] = LED_REPORT;
- buf[1] = LED_COMMAND;
- buf[2] = led_state;
+ radio->usb_buf[0] = LED_REPORT;
+ radio->usb_buf[1] = LED_COMMAND;
+ radio->usb_buf[2] = led_state;
- retval = si470x_set_report(radio, (void *) &buf, sizeof(buf));
+ retval = si470x_set_report(radio, radio->usb_buf, LED_REPORT_SIZE);
return (retval < 0) ? -EINVAL : 0;
}
@@ -346,19 +344,18 @@ static int si470x_set_led_state(struct si470x_device *radio,
*/
static int si470x_get_scratch_page_versions(struct si470x_device *radio)
{
- unsigned char buf[SCRATCH_REPORT_SIZE];
int retval;
- buf[0] = SCRATCH_REPORT;
+ radio->usb_buf[0] = SCRATCH_REPORT;
- retval = si470x_get_report(radio, (void *) &buf, sizeof(buf));
+ retval = si470x_get_report(radio, radio->usb_buf, SCRATCH_REPORT_SIZE);
if (retval < 0)
dev_warn(&radio->intf->dev, "si470x_get_scratch: "
"si470x_get_report returned %d\n", retval);
else {
- radio->software_version = buf[1];
- radio->hardware_version = buf[2];
+ radio->software_version = radio->usb_buf[1];
+ radio->hardware_version = radio->usb_buf[2];
}
return (retval < 0) ? -EINVAL : 0;
@@ -509,6 +506,7 @@ static void si470x_usb_release(struct v4l2_device *v4l2_dev)
v4l2_device_unregister(&radio->v4l2_dev);
kfree(radio->int_in_buffer);
kfree(radio->buffer);
+ kfree(radio->usb_buf);
kfree(radio);
}
@@ -593,6 +591,11 @@ static int si470x_usb_driver_probe(struct usb_interface *intf,
retval = -ENOMEM;
goto err_initial;
}
+ radio->usb_buf = kmalloc(MAX_REPORT_SIZE, GFP_KERNEL);
+ if (radio->usb_buf == NULL) {
+ retval = -ENOMEM;
+ goto err_radio;
+ }
radio->usbdev = interface_to_usbdev(intf);
radio->intf = intf;
radio->band = 1; /* Default to 76 - 108 MHz */
@@ -612,7 +615,7 @@ static int si470x_usb_driver_probe(struct usb_interface *intf,
if (!radio->int_in_endpoint) {
dev_info(&intf->dev, "could not find interrupt in endpoint\n");
retval = -EIO;
- goto err_radio;
+ goto err_usbbuf;
}
int_end_size = le16_to_cpu(radio->int_in_endpoint->wMaxPacketSize);
@@ -621,7 +624,7 @@ static int si470x_usb_driver_probe(struct usb_interface *intf,
if (!radio->int_in_buffer) {
dev_info(&intf->dev, "could not allocate int_in_buffer");
retval = -ENOMEM;
- goto err_radio;
+ goto err_usbbuf;
}
radio->int_in_urb = usb_alloc_urb(0, GFP_KERNEL);
@@ -743,6 +746,8 @@ err_urb:
usb_free_urb(radio->int_in_urb);
err_intbuffer:
kfree(radio->int_in_buffer);
+err_usbbuf:
+ kfree(radio->usb_buf);
err_radio:
kfree(radio);
err_initial:
diff --git a/drivers/media/radio/si470x/radio-si470x.h b/drivers/media/radio/si470x/radio-si470x.h
index 467e9557548..4b7660470e2 100644
--- a/drivers/media/radio/si470x/radio-si470x.h
+++ b/drivers/media/radio/si470x/radio-si470x.h
@@ -167,6 +167,7 @@ struct si470x_device {
/* reference to USB and video device */
struct usb_device *usbdev;
struct usb_interface *intf;
+ char *usb_buf;
/* Interrupt endpoint handling */
char *int_in_buffer;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-16 06:16:49 +0000