diff options
Diffstat (limited to 'drivers/net/wireless/mwifiex/debugfs.c')
| -rw-r--r-- | drivers/net/wireless/mwifiex/debugfs.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/net/wireless/mwifiex/debugfs.c b/drivers/net/wireless/mwifiex/debugfs.c index 414ee2da9bfc..f3e19e917949 100644 --- a/drivers/net/wireless/mwifiex/debugfs.c +++ b/drivers/net/wireless/mwifiex/debugfs.c @@ -535,6 +535,67 @@ done: return ret; } +/* Proc debug_mask file read handler. + * This function is called when the 'debug_mask' file is opened for reading + * This function can be used read driver debugging mask value. + */ +static ssize_t +mwifiex_debug_mask_read(struct file *file, char __user *ubuf, + size_t count, loff_t *ppos) +{ + struct mwifiex_private *priv = + (struct mwifiex_private *)file->private_data; + unsigned long page = get_zeroed_page(GFP_KERNEL); + char *buf = (char *)page; + size_t ret = 0; + int pos = 0; + + if (!buf) + return -ENOMEM; + + pos += snprintf(buf, PAGE_SIZE, "debug mask=0x%08x\n", + priv->adapter->debug_mask); + ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos); + + free_page(page); + return ret; +} + +/* Proc debug_mask file read handler. + * This function is called when the 'debug_mask' file is opened for reading + * This function can be used read driver debugging mask value. + */ +static ssize_t +mwifiex_debug_mask_write(struct file *file, const char __user *ubuf, + size_t count, loff_t *ppos) +{ + int ret; + unsigned long debug_mask; + struct mwifiex_private *priv = (void *)file->private_data; + unsigned long addr = get_zeroed_page(GFP_KERNEL); + char *buf = (void *)addr; + size_t buf_size = min(count, (size_t)(PAGE_SIZE - 1)); + + if (!buf) + return -ENOMEM; + + if (copy_from_user(buf, ubuf, buf_size)) { + ret = -EFAULT; + goto done; + } + + if (kstrtoul(buf, 0, &debug_mask)) { + ret = -EINVAL; + goto done; + } + + priv->adapter->debug_mask = debug_mask; + ret = count; +done: + free_page(addr); + return ret; +} + /* Proc memrw file write handler. * This function is called when the 'memrw' file is opened for writing * This function can be used to write to a memory location. @@ -829,6 +890,7 @@ MWIFIEX_DFS_FILE_OPS(rdeeprom); MWIFIEX_DFS_FILE_OPS(memrw); MWIFIEX_DFS_FILE_OPS(hscfg); MWIFIEX_DFS_FILE_OPS(histogram); +MWIFIEX_DFS_FILE_OPS(debug_mask); /* * This function creates the debug FS directory structure and the files. @@ -854,6 +916,7 @@ mwifiex_dev_debugfs_init(struct mwifiex_private *priv) MWIFIEX_DFS_ADD_FILE(memrw); MWIFIEX_DFS_ADD_FILE(hscfg); MWIFIEX_DFS_ADD_FILE(histogram); + MWIFIEX_DFS_ADD_FILE(debug_mask); } /* |