diff options
Diffstat (limited to 'drivers/staging/vt6655/device_main.c')
-rw-r--r-- | drivers/staging/vt6655/device_main.c | 74 |
1 files changed, 21 insertions, 53 deletions
diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c index be4f6c2..08b250f 100644 --- a/drivers/staging/vt6655/device_main.c +++ b/drivers/staging/vt6655/device_main.c @@ -60,6 +60,7 @@ */ #undef __NO_VERSION__ +#include <linux/file.h> #include "device.h" #include "card.h" #include "channel.h" @@ -2737,83 +2738,50 @@ static int Config_FileGetParameter(unsigned char *string, return true; } -int Config_FileOperation(PSDevice pDevice, bool fwrite, unsigned char *Parameter) { - unsigned char *config_path = CONFIG_PATH; - unsigned char *buffer = NULL; +int Config_FileOperation(PSDevice pDevice,bool fwrite,unsigned char *Parameter) +{ + unsigned char *buffer = kmalloc(1024, GFP_KERNEL); unsigned char tmpbuffer[20]; - struct file *filp = NULL; - mm_segment_t old_fs = get_fs(); - //int oldfsuid=0,oldfsgid=0; - int result = 0; - - set_fs(KERNEL_DS); - - /* Can't do this anymore, so we rely on correct filesystem permissions: - //Make sure a caller can read or write power as root - oldfsuid=current->cred->fsuid; - oldfsgid=current->cred->fsgid; - current->cred->fsuid = 0; - current->cred->fsgid = 0; - */ - - //open file - filp = filp_open(config_path, O_RDWR, 0); - if (IS_ERR(filp)) { - printk("Config_FileOperation:open file fail?\n"); - result = -1; - goto error2; - } + struct file *file; + int result=0; - if (!(filp->f_op) || !(filp->f_op->read) || !(filp->f_op->write)) { - printk("file %s cann't readable or writable?\n", config_path); - result = -1; - goto error1; - } - - buffer = kmalloc(1024, GFP_KERNEL); - if (buffer == NULL) { + if (!buffer) { printk("allocate mem for file fail?\n"); - result = -1; - goto error1; + return -1; + } + file = filp_open(CONFIG_PATH, O_RDONLY, 0); + if (IS_ERR(file)) { + kfree(buffer); + printk("Config_FileOperation:open file fail?\n"); + return -1; } - if (filp->f_op->read(filp, buffer, 1024, &filp->f_pos) < 0) { + if (kernel_read(file, 0, buffer, 1024) < 0) { printk("read file error?\n"); result = -1; goto error1; } - if (Config_FileGetParameter("ZONETYPE", tmpbuffer, buffer) != true) { + if (Config_FileGetParameter("ZONETYPE",tmpbuffer,buffer)!=true) { printk("get parameter error?\n"); result = -1; goto error1; } - if (memcmp(tmpbuffer, "USA", 3) == 0) { + if (memcmp(tmpbuffer,"USA",3)==0) { result = ZoneType_USA; - } else if (memcmp(tmpbuffer, "JAPAN", 5) == 0) { + } else if(memcmp(tmpbuffer,"JAPAN",5)==0) { result = ZoneType_Japan; - } else if (memcmp(tmpbuffer, "EUROPE", 5) == 0) { + } else if(memcmp(tmpbuffer,"EUROPE",5)==0) { result = ZoneType_Europe; } else { result = -1; - printk("Unknown Zonetype[%s]?\n", tmpbuffer); + printk("Unknown Zonetype[%s]?\n",tmpbuffer); } error1: kfree(buffer); - - if (filp_close(filp, NULL)) - printk("Config_FileOperation:close file fail\n"); - -error2: - set_fs(old_fs); - - /* - current->cred->fsuid=oldfsuid; - current->cred->fsgid=oldfsgid; - */ - + fput(file); return result; } |