[v6,1/5,media] davinci: VPIF: fix module loading, init errors
Commit Message
Fix problems with automatic module loading by adding MODULE_ALIAS. Also
fix various load-time errors cause by incorrect or not present
platform_data.
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
---
drivers/media/platform/davinci/vpif.c | 5 ++++-
drivers/media/platform/davinci/vpif_capture.c | 15 ++++++++++++++-
drivers/media/platform/davinci/vpif_display.c | 6 ++++++
3 files changed, 24 insertions(+), 2 deletions(-)
Comments
On Wed, Dec 07, 2016 at 10:30:21AM -0800, Kevin Hilman wrote:
> Fix problems with automatic module loading by adding MODULE_ALIAS. Also
> fix various load-time errors cause by incorrect or not present
> platform_data.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
On 07/12/16 19:30, Kevin Hilman wrote:
> Fix problems with automatic module loading by adding MODULE_ALIAS. Also
> fix various load-time errors cause by incorrect or not present
> platform_data.
>
> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
> ---
> drivers/media/platform/davinci/vpif.c | 5 ++++-
> drivers/media/platform/davinci/vpif_capture.c | 15 ++++++++++++++-
> drivers/media/platform/davinci/vpif_display.c | 6 ++++++
> 3 files changed, 24 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/platform/davinci/vpif.c b/drivers/media/platform/davinci/vpif.c
> index 0380cf2e5775..f50148dcba64 100644
> --- a/drivers/media/platform/davinci/vpif.c
> +++ b/drivers/media/platform/davinci/vpif.c
> @@ -32,6 +32,9 @@
> MODULE_DESCRIPTION("TI DaVinci Video Port Interface driver");
> MODULE_LICENSE("GPL");
>
> +#define VPIF_DRIVER_NAME "vpif"
> +MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
> +
> #define VPIF_CH0_MAX_MODES 22
> #define VPIF_CH1_MAX_MODES 2
> #define VPIF_CH2_MAX_MODES 15
> @@ -466,7 +469,7 @@ static const struct dev_pm_ops vpif_pm = {
>
> static struct platform_driver vpif_driver = {
> .driver = {
> - .name = "vpif",
> + .name = VPIF_DRIVER_NAME,
> .pm = vpif_pm_ops,
> },
> .remove = vpif_remove,
> diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
> index 5104cc0ee40e..20c4344ed118 100644
> --- a/drivers/media/platform/davinci/vpif_capture.c
> +++ b/drivers/media/platform/davinci/vpif_capture.c
> @@ -45,6 +45,7 @@ module_param(debug, int, 0644);
> MODULE_PARM_DESC(debug, "Debug level 0-1");
>
> #define VPIF_DRIVER_NAME "vpif_capture"
> +MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
>
> /* global variables */
> static struct vpif_device vpif_obj = { {NULL} };
> @@ -647,6 +648,10 @@ static int vpif_input_to_subdev(
>
> vpif_dbg(2, debug, "vpif_input_to_subdev\n");
>
> + if (!chan_cfg)
> + return -1;
> + if (input_index >= chan_cfg->input_count)
> + return -1;
> subdev_name = chan_cfg->inputs[input_index].subdev_name;
> if (subdev_name == NULL)
> return -1;
> @@ -654,7 +659,7 @@ static int vpif_input_to_subdev(
> /* loop through the sub device list to get the sub device info */
> for (i = 0; i < vpif_cfg->subdev_count; i++) {
> subdev_info = &vpif_cfg->subdev_info[i];
> - if (!strcmp(subdev_info->name, subdev_name))
> + if (subdev_info && !strcmp(subdev_info->name, subdev_name))
Why this change? subdev_info can never be NULL.
Regards,
Hans
> return i;
> }
> return -1;
> @@ -685,6 +690,9 @@ static int vpif_set_input(
> if (sd_index >= 0) {
> sd = vpif_obj.sd[sd_index];
> subdev_info = &vpif_cfg->subdev_info[sd_index];
> + } else {
> + /* no subdevice, no input to setup */
> + return 0;
> }
>
> /* first setup input path from sub device to vpif */
> @@ -1435,6 +1443,11 @@ static __init int vpif_probe(struct platform_device *pdev)
> int res_idx = 0;
> int i, err;
>
> + if (!pdev->dev.platform_data) {
> + dev_warn(&pdev->dev, "Missing platform data. Giving up.\n");
> + return -EINVAL;
> + }
> +
> vpif_dev = &pdev->dev;
>
> err = initialize_vpif();
> diff --git a/drivers/media/platform/davinci/vpif_display.c b/drivers/media/platform/davinci/vpif_display.c
> index 75b27233ec2f..7f632b757d32 100644
> --- a/drivers/media/platform/davinci/vpif_display.c
> +++ b/drivers/media/platform/davinci/vpif_display.c
> @@ -42,6 +42,7 @@ module_param(debug, int, 0644);
> MODULE_PARM_DESC(debug, "Debug level 0-1");
>
> #define VPIF_DRIVER_NAME "vpif_display"
> +MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
>
> /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
> static int ycmux_mode;
> @@ -1249,6 +1250,11 @@ static __init int vpif_probe(struct platform_device *pdev)
> int res_idx = 0;
> int i, err;
>
> + if (!pdev->dev.platform_data) {
> + dev_warn(&pdev->dev, "Missing platform data. Giving up.\n");
> + return -EINVAL;
> + }
> +
> vpif_dev = &pdev->dev;
> err = initialize_vpif();
>
>
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Hans Verkuil <hverkuil@xs4all.nl> writes:
> On 07/12/16 19:30, Kevin Hilman wrote:
>> Fix problems with automatic module loading by adding MODULE_ALIAS. Also
>> fix various load-time errors cause by incorrect or not present
>> platform_data.
>>
>> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
>> ---
>> drivers/media/platform/davinci/vpif.c | 5 ++++-
>> drivers/media/platform/davinci/vpif_capture.c | 15 ++++++++++++++-
>> drivers/media/platform/davinci/vpif_display.c | 6 ++++++
>> 3 files changed, 24 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/media/platform/davinci/vpif.c b/drivers/media/platform/davinci/vpif.c
>> index 0380cf2e5775..f50148dcba64 100644
>> --- a/drivers/media/platform/davinci/vpif.c
>> +++ b/drivers/media/platform/davinci/vpif.c
>> @@ -32,6 +32,9 @@
>> MODULE_DESCRIPTION("TI DaVinci Video Port Interface driver");
>> MODULE_LICENSE("GPL");
>>
>> +#define VPIF_DRIVER_NAME "vpif"
>> +MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
>> +
>> #define VPIF_CH0_MAX_MODES 22
>> #define VPIF_CH1_MAX_MODES 2
>> #define VPIF_CH2_MAX_MODES 15
>> @@ -466,7 +469,7 @@ static const struct dev_pm_ops vpif_pm = {
>>
>> static struct platform_driver vpif_driver = {
>> .driver = {
>> - .name = "vpif",
>> + .name = VPIF_DRIVER_NAME,
>> .pm = vpif_pm_ops,
>> },
>> .remove = vpif_remove,
>> diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
>> index 5104cc0ee40e..20c4344ed118 100644
>> --- a/drivers/media/platform/davinci/vpif_capture.c
>> +++ b/drivers/media/platform/davinci/vpif_capture.c
>> @@ -45,6 +45,7 @@ module_param(debug, int, 0644);
>> MODULE_PARM_DESC(debug, "Debug level 0-1");
>>
>> #define VPIF_DRIVER_NAME "vpif_capture"
>> +MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
>>
>> /* global variables */
>> static struct vpif_device vpif_obj = { {NULL} };
>> @@ -647,6 +648,10 @@ static int vpif_input_to_subdev(
>>
>> vpif_dbg(2, debug, "vpif_input_to_subdev\n");
>>
>> + if (!chan_cfg)
>> + return -1;
>> + if (input_index >= chan_cfg->input_count)
>> + return -1;
>> subdev_name = chan_cfg->inputs[input_index].subdev_name;
>> if (subdev_name == NULL)
>> return -1;
>> @@ -654,7 +659,7 @@ static int vpif_input_to_subdev(
>> /* loop through the sub device list to get the sub device info */
>> for (i = 0; i < vpif_cfg->subdev_count; i++) {
>> subdev_info = &vpif_cfg->subdev_info[i];
>> - if (!strcmp(subdev_info->name, subdev_name))
>> + if (subdev_info && !strcmp(subdev_info->name, subdev_name))
>
> Why this change? subdev_info can never be NULL.
A debugging leftover I guess. Will remove and resend.
Thanks for the review,
Kevin
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@@ -32,6 +32,9 @@
MODULE_DESCRIPTION("TI DaVinci Video Port Interface driver");
MODULE_LICENSE("GPL");
+#define VPIF_DRIVER_NAME "vpif"
+MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
+
#define VPIF_CH0_MAX_MODES 22
#define VPIF_CH1_MAX_MODES 2
#define VPIF_CH2_MAX_MODES 15
@@ -466,7 +469,7 @@ static const struct dev_pm_ops vpif_pm = {
static struct platform_driver vpif_driver = {
.driver = {
- .name = "vpif",
+ .name = VPIF_DRIVER_NAME,
.pm = vpif_pm_ops,
},
.remove = vpif_remove,
@@ -45,6 +45,7 @@ module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level 0-1");
#define VPIF_DRIVER_NAME "vpif_capture"
+MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
/* global variables */
static struct vpif_device vpif_obj = { {NULL} };
@@ -647,6 +648,10 @@ static int vpif_input_to_subdev(
vpif_dbg(2, debug, "vpif_input_to_subdev\n");
+ if (!chan_cfg)
+ return -1;
+ if (input_index >= chan_cfg->input_count)
+ return -1;
subdev_name = chan_cfg->inputs[input_index].subdev_name;
if (subdev_name == NULL)
return -1;
@@ -654,7 +659,7 @@ static int vpif_input_to_subdev(
/* loop through the sub device list to get the sub device info */
for (i = 0; i < vpif_cfg->subdev_count; i++) {
subdev_info = &vpif_cfg->subdev_info[i];
- if (!strcmp(subdev_info->name, subdev_name))
+ if (subdev_info && !strcmp(subdev_info->name, subdev_name))
return i;
}
return -1;
@@ -685,6 +690,9 @@ static int vpif_set_input(
if (sd_index >= 0) {
sd = vpif_obj.sd[sd_index];
subdev_info = &vpif_cfg->subdev_info[sd_index];
+ } else {
+ /* no subdevice, no input to setup */
+ return 0;
}
/* first setup input path from sub device to vpif */
@@ -1435,6 +1443,11 @@ static __init int vpif_probe(struct platform_device *pdev)
int res_idx = 0;
int i, err;
+ if (!pdev->dev.platform_data) {
+ dev_warn(&pdev->dev, "Missing platform data. Giving up.\n");
+ return -EINVAL;
+ }
+
vpif_dev = &pdev->dev;
err = initialize_vpif();
@@ -42,6 +42,7 @@ module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level 0-1");
#define VPIF_DRIVER_NAME "vpif_display"
+MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
/* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
static int ycmux_mode;
@@ -1249,6 +1250,11 @@ static __init int vpif_probe(struct platform_device *pdev)
int res_idx = 0;
int i, err;
+ if (!pdev->dev.platform_data) {
+ dev_warn(&pdev->dev, "Missing platform data. Giving up.\n");
+ return -EINVAL;
+ }
+
vpif_dev = &pdev->dev;
err = initialize_vpif();