On Thu, Aug 09, 2018 at 04:59:39PM +0530, Ajay Singh wrote:
> wilc_debug.o object file is included for both SDIO and SPI module. When
> anyone(either SDIO or SPI) module is compiled as loaded module and another
> as buildin module then below compilation error occurs.
>
> "drivers/staging/wilc1000/wilc_debugfs.o:(.data+0x10): undefined
> reference to `__this_module'"
>
> Moved the declaration of file_operation variable in SDIO/SPI files and
> pass this as parameter to wilc_debugfs_init().
> Refactor wilc_debugfs_init() as its not required to maintain
> 'wilc_debugfs_info_t' in debugfs_info[] array. Also modified file
> permission from 0666 to 0600 & use 'data' field as 'NULL' in
> debugfs_create_file() call.
That is a lot of different things all in one patch. Please never do
that.
>
> Fixes: 9abc44ba4e2f ("staging: wilc1000: fix TODO to compile spi and sdio
> components in single module")
> Reported-by: kbuild test robot <l...@intel.com>
> Signed-off-by: Ajay Singh <ajay.kat...@microchip.com>
> ---
> changes since v1:
> 1. Correct the Fixes tag format.
> 2. Remove blank line between Fixes and Reported-by tag.
> 3. Modified debug print and use only NULL check in wilc_debugfs_init().
>
> drivers/staging/wilc1000/linux_wlan.c | 1 -
> drivers/staging/wilc1000/wilc_debugfs.c | 51
> +++++++--------------------------
> drivers/staging/wilc1000/wilc_sdio.c | 7 +++++
> drivers/staging/wilc1000/wilc_spi.c | 7 +++++
> drivers/staging/wilc1000/wilc_wlan_if.h | 7 ++++-
> 5 files changed, 30 insertions(+), 43 deletions(-)
>
> diff --git a/drivers/staging/wilc1000/linux_wlan.c
> b/drivers/staging/wilc1000/linux_wlan.c
> index 01cf4bd..37885ad 100644
> --- a/drivers/staging/wilc1000/linux_wlan.c
> +++ b/drivers/staging/wilc1000/linux_wlan.c
> @@ -1062,7 +1062,6 @@ int wilc_netdev_init(struct wilc **wilc, struct device
> *dev, int io_type,
> if (!wl)
> return -ENOMEM;
>
> - wilc_debugfs_init();
> *wilc = wl;
> wl->io_type = io_type;
> wl->hif_func = ops;
> diff --git a/drivers/staging/wilc1000/wilc_debugfs.c
> b/drivers/staging/wilc1000/wilc_debugfs.c
> index edc7287..9787b3a 100644
> --- a/drivers/staging/wilc1000/wilc_debugfs.c
> +++ b/drivers/staging/wilc1000/wilc_debugfs.c
> @@ -20,8 +20,8 @@ static struct dentry *wilc_dir;
> #define DBG_LEVEL_ALL (DEBUG | INFO | WRN | ERR)
> static atomic_t WILC_DEBUG_LEVEL = ATOMIC_INIT(ERR);
>
> -static ssize_t wilc_debug_level_read(struct file *file, char __user *userbuf,
> - size_t count, loff_t *ppos)
> +ssize_t wilc_debug_level_read(struct file *file, char __user *userbuf,
> + size_t count, loff_t *ppos)
> {
> char buf[128];
> int res = 0;
> @@ -36,9 +36,8 @@ static ssize_t wilc_debug_level_read(struct file *file,
> char __user *userbuf,
> return simple_read_from_buffer(userbuf, count, ppos, buf, res);
> }
>
> -static ssize_t wilc_debug_level_write(struct file *filp,
> - const char __user *buf, size_t count,
> - loff_t *ppos)
> +ssize_t wilc_debug_level_write(struct file *filp, const char __user *buf,
> + size_t count, loff_t *ppos)
> {
> int flag = 0;
> int ret;
> @@ -63,45 +62,15 @@ static ssize_t wilc_debug_level_write(struct file *filp,
> return count;
> }
>
> -#define FOPS(_open, _read, _write, _poll) { \
> - .owner = THIS_MODULE, \
> - .open = (_open), \
> - .read = (_read), \
> - .write = (_write), \
> - .poll = (_poll), \
> -}
> -
> -struct wilc_debugfs_info_t {
> - const char *name;
> - int perm;
> - unsigned int data;
> - const struct file_operations fops;
> -};
> -
> -static struct wilc_debugfs_info_t debugfs_info[] = {
> - {
> - "wilc_debug_level",
> - 0666,
> - (DEBUG | ERR),
> - FOPS(NULL, wilc_debug_level_read, wilc_debug_level_write, NULL),
> - },
> -};
> -
> -int wilc_debugfs_init(void)
> +void wilc_debugfs_init(const struct file_operations *fops)
> {
> - int i;
> - struct wilc_debugfs_info_t *info;
> -
> wilc_dir = debugfs_create_dir("wilc_wifi", NULL);
> - for (i = 0; i < ARRAY_SIZE(debugfs_info); i++) {
> - info = &debugfs_info[i];
> - debugfs_create_file(info->name,
> - info->perm,
> - wilc_dir,
> - &info->data,
> - &info->fops);
> + if (!wilc_dir) {
> + pr_err("Error creating debugfs/wilc_wifi/\n");
> + return;
The lack of checking was there for a reason, please do not add it back,
it is not needed at all.
> }
> - return 0;
> +
> + debugfs_create_file("wilc_debug_level", 0600, wilc_dir, NULL, fops);
thanks,
greg k-h
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