[media] staging: lirc: Fix sparse warnings

Fix sparse warnings by adding __user and __iomem annotations where
necessary and removing certain unnecessary casts. While at it,
also use u32 in place of __u32.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/staging/media/lirc/lirc_bt829.c b/drivers/staging/media/lirc/lirc_bt829.c
index 30edc740ac2546fcaea7b0dfcc82ec67c1eb7f06..fe010542ab4b6e1d2763a5f8acfa0bb8c6eba43c 100644 (file)
--- a/drivers/staging/media/lirc/lirc_bt829.c
+++ b/drivers/staging/media/lirc/lirc_bt829.c
@@ -64,7 +64,7 @@ static bool debug;
 
 static int atir_minor;
 static phys_addr_t pci_addr_phys;
-static unsigned char *pci_addr_lin;
+static unsigned char __iomem *pci_addr_lin;
 
 static struct lirc_driver atir_driver;
 
@@ -382,7 +382,7 @@ static unsigned char do_get_bits(void)
 
 static unsigned int read_index(unsigned char index)
 {
-       unsigned char *addr;
+       unsigned char __iomem *addr;
        unsigned int value;
        /*  addr = pci_addr_lin + DATA_PCI_OFF + ((index & 0xFF) << 2); */
        addr = pci_addr_lin + ((index & 0xFF) << 2);
@@ -392,7 +392,7 @@ static unsigned int read_index(unsigned char index)
 
 static void write_index(unsigned char index, unsigned int reg_val)
 {
-       unsigned char *addr;
+       unsigned char __iomem *addr;
        addr = pci_addr_lin + ((index & 0xFF) << 2);
        writel(reg_val, addr);
 }

diff --git a/drivers/staging/media/lirc/lirc_parallel.c b/drivers/staging/media/lirc/lirc_parallel.c
index 62f5137b947b5c643cc6290e5a93c083939372c7..1394f020e46b4a2283e4684f5d7ec37ee55f190f 100644 (file)
--- a/drivers/staging/media/lirc/lirc_parallel.c
+++ b/drivers/staging/media/lirc/lirc_parallel.c
@@ -324,7 +324,8 @@ static loff_t lirc_lseek(struct file *filep, loff_t offset, int orig)
        return -ESPIPE;
 }
 
-static ssize_t lirc_read(struct file *filep, char *buf, size_t n, loff_t *ppos)
+static ssize_t lirc_read(struct file *filep, char __user *buf, size_t n,
+                        loff_t *ppos)
 {
        int result = 0;
        int count = 0;
@@ -362,7 +363,7 @@ static ssize_t lirc_read(struct file *filep, char *buf, size_t n, loff_t *ppos)
        return count ? count : result;
 }
 
-static ssize_t lirc_write(struct file *filep, const char *buf, size_t n,
+static ssize_t lirc_write(struct file *filep, const char __user *buf, size_t n,
                          loff_t *ppos)
 {
        int count;
@@ -463,43 +464,44 @@ static unsigned int lirc_poll(struct file *file, poll_table *wait)
 static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 {
        int result;
-       __u32 features = LIRC_CAN_SET_TRANSMITTER_MASK |
-                        LIRC_CAN_SEND_PULSE | LIRC_CAN_REC_MODE2;
-       __u32 mode;
-       __u32 value;
+       u32 __user *uptr = (u32 __user *)arg;
+       u32 features = LIRC_CAN_SET_TRANSMITTER_MASK |
+                      LIRC_CAN_SEND_PULSE | LIRC_CAN_REC_MODE2;
+       u32 mode;
+       u32 value;
 
        switch (cmd) {
        case LIRC_GET_FEATURES:
-               result = put_user(features, (__u32 *) arg);
+               result = put_user(features, uptr);
                if (result)
                        return result;
                break;
        case LIRC_GET_SEND_MODE:
-               result = put_user(LIRC_MODE_PULSE, (__u32 *) arg);
+               result = put_user(LIRC_MODE_PULSE, uptr);
                if (result)
                        return result;
                break;
        case LIRC_GET_REC_MODE:
-               result = put_user(LIRC_MODE_MODE2, (__u32 *) arg);
+               result = put_user(LIRC_MODE_MODE2, uptr);
                if (result)
                        return result;
                break;
        case LIRC_SET_SEND_MODE:
-               result = get_user(mode, (__u32 *) arg);
+               result = get_user(mode, uptr);
                if (result)
                        return result;
                if (mode != LIRC_MODE_PULSE)
                        return -EINVAL;
                break;
        case LIRC_SET_REC_MODE:
-               result = get_user(mode, (__u32 *) arg);
+               result = get_user(mode, uptr);
                if (result)
                        return result;
                if (mode != LIRC_MODE_MODE2)
                        return -ENOSYS;
                break;
        case LIRC_SET_TRANSMITTER_MASK:
-               result = get_user(value, (__u32 *) arg);
+               result = get_user(value, uptr);
                if (result)
                        return result;
                if ((value & LIRC_PARALLEL_TRANSMITTER_MASK) != value)

diff --git a/drivers/staging/media/lirc/lirc_serial.c b/drivers/staging/media/lirc/lirc_serial.c
index 10c685d5de7cea672eae318eaa6df034095fa19c..dc5ba43116c7ce97fd23ee32eb797f3e855d49ec 100644 (file)
--- a/drivers/staging/media/lirc/lirc_serial.c
+++ b/drivers/staging/media/lirc/lirc_serial.c
@@ -1011,7 +1011,8 @@ static ssize_t lirc_write(struct file *file, const char __user *buf,
 static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 {
        int result;
-       __u32 value;
+       u32 __user *uptr = (u32 __user *)arg;
+       u32 value;
 
        switch (cmd) {
        case LIRC_GET_SEND_MODE:
@@ -1020,7 +1021,7 @@ static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 
                result = put_user(LIRC_SEND2MODE
                                  (hardware[type].features&LIRC_CAN_SEND_MASK),
-                                 (__u32 *) arg);
+                                 uptr);
                if (result)
                        return result;
                break;
@@ -1029,7 +1030,7 @@ static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
                if (!(hardware[type].features&LIRC_CAN_SEND_MASK))
                        return -ENOIOCTLCMD;
 
-               result = get_user(value, (__u32 *) arg);
+               result = get_user(value, uptr);
                if (result)
                        return result;
                /* only LIRC_MODE_PULSE supported */
@@ -1046,7 +1047,7 @@ static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
                if (!(hardware[type].features&LIRC_CAN_SET_SEND_DUTY_CYCLE))
                        return -ENOIOCTLCMD;
 
-               result = get_user(value, (__u32 *) arg);
+               result = get_user(value, uptr);
                if (result)
                        return result;
                if (value <= 0 || value > 100)
@@ -1059,7 +1060,7 @@ static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
                if (!(hardware[type].features&LIRC_CAN_SET_SEND_CARRIER))
                        return -ENOIOCTLCMD;
 
-               result = get_user(value, (__u32 *) arg);
+               result = get_user(value, uptr);
                if (result)
                        return result;
                if (value > 500000 || value < 20000)

diff --git a/drivers/staging/media/lirc/lirc_sir.c b/drivers/staging/media/lirc/lirc_sir.c
index f781c532b3c42e7c4a8b3635c66b967cc8beb649..e31cbb81f059329565ca2df9c02989899bac44a8 100644 (file)
--- a/drivers/staging/media/lirc/lirc_sir.c
+++ b/drivers/staging/media/lirc/lirc_sir.c
@@ -187,10 +187,10 @@ static bool debug;
 
 /* Communication with user-space */
 static unsigned int lirc_poll(struct file *file, poll_table *wait);
-static ssize_t lirc_read(struct file *file, char *buf, size_t count,
-               loff_t *ppos);
-static ssize_t lirc_write(struct file *file, const char *buf, size_t n,
-               loff_t *pos);
+static ssize_t lirc_read(struct file *file, char __user *buf, size_t count,
+                        loff_t *ppos);
+static ssize_t lirc_write(struct file *file, const char __user *buf, size_t n,
+                         loff_t *pos);
 static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
 static void add_read_queue(int flag, unsigned long val);
 static int init_chrdev(void);
@@ -252,8 +252,8 @@ static unsigned int lirc_poll(struct file *file, poll_table *wait)
        return 0;
 }
 
-static ssize_t lirc_read(struct file *file, char *buf, size_t count,
-               loff_t *ppos)
+static ssize_t lirc_read(struct file *file, char __user *buf, size_t count,
+                        loff_t *ppos)
 {
        int n = 0;
        int retval = 0;
@@ -266,9 +266,9 @@ static ssize_t lirc_read(struct file *file, char *buf, size_t count,
        set_current_state(TASK_INTERRUPTIBLE);
        while (n < count) {
                if (rx_head != rx_tail) {
-                       if (copy_to_user((void *) buf + n,
-                                       (void *) (rx_buf + rx_head),
-                                       sizeof(int))) {
+                       if (copy_to_user(buf + n,
+                                        rx_buf + rx_head,
+                                        sizeof(int))) {
                                retval = -EFAULT;
                                break;
                        }
@@ -291,8 +291,8 @@ static ssize_t lirc_read(struct file *file, char *buf, size_t count,
        set_current_state(TASK_RUNNING);
        return n ? n : retval;
 }
-static ssize_t lirc_write(struct file *file, const char *buf, size_t n,
-                               loff_t *pos)
+static ssize_t lirc_write(struct file *file, const char __user *buf, size_t n,
+                         loff_t *pos)
 {
        unsigned long flags;
        int i, count;
@@ -338,8 +338,9 @@ static ssize_t lirc_write(struct file *file, const char *buf, size_t n,
 
 static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 {
+       u32 __user *uptr = (u32 __user *)arg;
        int retval = 0;
-       __u32 value = 0;
+       u32 value = 0;
 #ifdef LIRC_ON_SA1100
 
        if (cmd == LIRC_GET_FEATURES)
@@ -364,16 +365,16 @@ static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
        case LIRC_GET_FEATURES:
        case LIRC_GET_SEND_MODE:
        case LIRC_GET_REC_MODE:
-               retval = put_user(value, (__u32 *) arg);
+               retval = put_user(value, uptr);
                break;
 
        case LIRC_SET_SEND_MODE:
        case LIRC_SET_REC_MODE:
-               retval = get_user(value, (__u32 *) arg);
+               retval = get_user(value, uptr);
                break;
 #ifdef LIRC_ON_SA1100
        case LIRC_SET_SEND_DUTY_CYCLE:
-               retval = get_user(value, (__u32 *) arg);
+               retval = get_user(value, uptr);
                if (retval)
                        return retval;
                if (value <= 0 || value > 100)
@@ -388,7 +389,7 @@ static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
                        space_width -= LIRC_ON_SA1100_TRANSMITTER_LATENCY;
                break;
        case LIRC_SET_SEND_CARRIER:
-               retval = get_user(value, (__u32 *) arg);
+               retval = get_user(value, uptr);
                if (retval)
                        return retval;
                if (value > 500000 || value < 20000)

diff --git a/drivers/staging/media/lirc/lirc_zilog.c b/drivers/staging/media/lirc/lirc_zilog.c
index e1feb6164593484cb4eb9f286d021a9bcb2c09f3..3259aacfd3501e95bc130a6479e620a4c8494598 100644 (file)
--- a/drivers/staging/media/lirc/lirc_zilog.c
+++ b/drivers/staging/media/lirc/lirc_zilog.c
@@ -892,7 +892,8 @@ out:
 }
 
 /* copied from lirc_dev */
-static ssize_t read(struct file *filep, char *outbuf, size_t n, loff_t *ppos)
+static ssize_t read(struct file *filep, char __user *outbuf, size_t n,
+                   loff_t *ppos)
 {
        struct IR *ir = filep->private_data;
        struct IR_rx *rx;
@@ -954,7 +955,7 @@ static ssize_t read(struct file *filep, char *outbuf, size_t n, loff_t *ppos)
                        }
                        m = lirc_buffer_read(rbuf, buf);
                        if (m == rbuf->chunk_size) {
-                               ret = copy_to_user((void *)outbuf+written, buf,
+                               ret = copy_to_user(outbuf + written, buf,
                                                   rbuf->chunk_size);
                                written += rbuf->chunk_size;
                        } else {
@@ -1094,8 +1095,8 @@ static int send_code(struct IR_tx *tx, unsigned int code, unsigned int key)
  * sent to the device.  We have a spin lock as per i2c documentation to prevent
  * multiple concurrent sends which would probably cause the device to explode.
  */
-static ssize_t write(struct file *filep, const char *buf, size_t n,
-                         loff_t *ppos)
+static ssize_t write(struct file *filep, const char __user *buf, size_t n,
+                    loff_t *ppos)
 {
        struct IR *ir = filep->private_data;
        struct IR_tx *tx;
@@ -1237,6 +1238,7 @@ static unsigned int poll(struct file *filep, poll_table *wait)
 static long ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 {
        struct IR *ir = filep->private_data;
+       unsigned long __user *uptr = (unsigned long __user *)arg;
        int result;
        unsigned long mode, features;
 
@@ -1244,11 +1246,10 @@ static long ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 
        switch (cmd) {
        case LIRC_GET_LENGTH:
-               result = put_user((unsigned long)13,
-                                 (unsigned long *)arg);
+               result = put_user(13UL, uptr);
                break;
        case LIRC_GET_FEATURES:
-               result = put_user(features, (unsigned long *) arg);
+               result = put_user(features, uptr);
                break;
        case LIRC_GET_REC_MODE:
                if (!(features&LIRC_CAN_REC_MASK))
@@ -1256,13 +1257,13 @@ static long ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
 
                result = put_user(LIRC_REC2MODE
                                  (features&LIRC_CAN_REC_MASK),
-                                 (unsigned long *)arg);
+                                 uptr);
                break;
        case LIRC_SET_REC_MODE:
                if (!(features&LIRC_CAN_REC_MASK))
                        return -ENOSYS;
 
-               result = get_user(mode, (unsigned long *)arg);
+               result = get_user(mode, uptr);
                if (!result && !(LIRC_MODE2REC(mode) & features))
                        result = -EINVAL;
                break;
@@ -1270,13 +1271,13 @@ static long ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
                if (!(features&LIRC_CAN_SEND_MASK))
                        return -ENOSYS;
 
-               result = put_user(LIRC_MODE_PULSE, (unsigned long *) arg);
+               result = put_user(LIRC_MODE_PULSE, uptr);
                break;
        case LIRC_SET_SEND_MODE:
                if (!(features&LIRC_CAN_SEND_MASK))
                        return -ENOSYS;
 
-               result = get_user(mode, (unsigned long *) arg);
+               result = get_user(mode, uptr);
                if (!result && mode != LIRC_MODE_PULSE)
                        return -EINVAL;
                break;