From 465b8229acd01bbb72fea89ee6f3657071952bdf Mon Sep 17 00:00:00 2001 From: Tuomas Tynkkynen Date: Thu, 8 May 2014 08:13:17 -0300 Subject: [PATCH] [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 Reviewed-by: Dan Carpenter Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/lirc/lirc_bt829.c | 6 ++-- drivers/staging/media/lirc/lirc_parallel.c | 26 +++++++++-------- drivers/staging/media/lirc/lirc_serial.c | 11 ++++---- drivers/staging/media/lirc/lirc_sir.c | 33 +++++++++++----------- drivers/staging/media/lirc/lirc_zilog.c | 23 +++++++-------- 5 files changed, 52 insertions(+), 47 deletions(-) diff --git a/drivers/staging/media/lirc/lirc_bt829.c b/drivers/staging/media/lirc/lirc_bt829.c index 30edc740ac25..fe010542ab4b 100644 --- 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 62f5137b947b..1394f020e46b 100644 --- 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 10c685d5de7c..dc5ba43116c7 100644 --- 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 f781c532b3c4..e31cbb81f059 100644 --- 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 e1feb6164593..3259aacfd350 100644 --- 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; -- 2.20.1