diff options
author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2018-03-03 14:15:57 -0500 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2018-03-06 05:54:55 -0500 |
commit | 8adbc7d68a21bc0bb584100adba326f4fa865878 (patch) | |
tree | 4fb337d9847fec006a3832faea7688489a44c043 /drivers/media/usb/em28xx | |
parent | 349ac5bba1f5862b3baf79183d5583dc9d48731e (diff) |
media: em28xx-i2c: fix most coding style issues
There are a number of coding style issues at em28xx-i2c.
Fix most of them, by using checkpatch in strict mode to point
for it.
Automatic fixes were made with --fix-inplace, but those
were complemented by manual work.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/usb/em28xx')
-rw-r--r-- | drivers/media/usb/em28xx/em28xx-i2c.c | 90 |
1 files changed, 48 insertions, 42 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-i2c.c b/drivers/media/usb/em28xx/em28xx-i2c.c index 50b0791a68a5..9151bccd859a 100644 --- a/drivers/media/usb/em28xx/em28xx-i2c.c +++ b/drivers/media/usb/em28xx/em28xx-i2c.c @@ -18,7 +18,6 @@ // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. - #include "em28xx.h" #include <linux/module.h> @@ -47,7 +46,6 @@ MODULE_PARM_DESC(i2c_debug, "i2c debug message level (1: normal debug, 2: show I "i2c: %s: " fmt, __func__, ## arg); \ } while (0) - /* * Time in msecs to wait for i2c xfers to finish. * 35ms is the maximum time a SMBUS device could wait when @@ -91,7 +89,6 @@ static int em2800_i2c_send_bytes(struct em28xx *dev, u8 addr, u8 *buf, u16 len) if (len < 1 || len > 4) return -EOPNOTSUPP; - BUG_ON(len < 1 || len > 4); b2[5] = 0x80 + len - 1; b2[4] = addr; b2[3] = buf[0]; @@ -125,7 +122,7 @@ static int em2800_i2c_send_bytes(struct em28xx *dev, u8 addr, u8 *buf, u16 len) ret); return ret; } - msleep(5); + usleep_range(5000, 6000); } dprintk(0, "write to i2c device at 0x%x timed out\n", addr); return -ETIMEDOUT; @@ -172,14 +169,13 @@ static int em2800_i2c_recv_bytes(struct em28xx *dev, u8 addr, u8 *buf, u16 len) ret); return ret; } - msleep(5); + usleep_range(5000, 6000); } - if (ret != 0x84 + len - 1) { + if (ret != 0x84 + len - 1) dprintk(0, "read from i2c device at 0x%x timed out\n", addr); - } /* get the received message */ - ret = dev->em28xx_read_reg_req_len(dev, 0x00, 4-len, buf2, len); + ret = dev->em28xx_read_reg_req_len(dev, 0x00, 4 - len, buf2, len); if (ret != len) { dev_warn(&dev->intf->dev, "reading from i2c device at 0x%x failed: couldn't get the received message from the bridge (error=%i)\n", @@ -231,12 +227,11 @@ static int em28xx_i2c_send_bytes(struct em28xx *dev, u16 addr, u8 *buf, "writing to i2c device at 0x%x failed (error=%i)\n", addr, ret); return ret; - } else { - dev_warn(&dev->intf->dev, - "%i bytes write to i2c device at 0x%x requested, but %i bytes written\n", - len, addr, ret); - return -EIO; } + dev_warn(&dev->intf->dev, + "%i bytes write to i2c device at 0x%x requested, but %i bytes written\n", + len, addr, ret); + return -EIO; } /* wait for completion */ @@ -255,7 +250,7 @@ static int em28xx_i2c_send_bytes(struct em28xx *dev, u16 addr, u8 *buf, ret); return ret; } - msleep(5); + usleep_range(5000, 6000); /* * NOTE: do we really have to wait for success ? * Never seen anything else than 0x00 or 0x10 @@ -378,12 +373,12 @@ static int em25xx_bus_B_send_bytes(struct em28xx *dev, u16 addr, u8 *buf, "writing to i2c device at 0x%x failed (error=%i)\n", addr, ret); return ret; - } else { - dev_warn(&dev->intf->dev, - "%i bytes write to i2c device at 0x%x requested, but %i bytes written\n", - len, addr, ret); - return -EIO; } + + dev_warn(&dev->intf->dev, + "%i bytes write to i2c device at 0x%x requested, but %i bytes written\n", + len, addr, ret); + return -EIO; } /* Check success */ ret = dev->em28xx_read_reg_req(dev, 0x08, 0x0000); @@ -393,7 +388,8 @@ static int em25xx_bus_B_send_bytes(struct em28xx *dev, u16 addr, u8 *buf, */ if (!ret) return len; - else if (ret > 0) { + + if (ret > 0) { dprintk(1, "Bus B R08 returned 0x%02x: I2C ACK error\n", ret); return -ENXIO; } @@ -447,7 +443,8 @@ static int em25xx_bus_B_recv_bytes(struct em28xx *dev, u16 addr, u8 *buf, */ if (!ret) return len; - else if (ret > 0) { + + if (ret > 0) { dprintk(1, "Bus B R08 returned 0x%02x: I2C ACK error\n", ret); return -ENXIO; } @@ -535,13 +532,15 @@ static int em28xx_i2c_xfer(struct i2c_adapter *i2c_adap, { struct em28xx_i2c_bus *i2c_bus = i2c_adap->algo_data; struct em28xx *dev = i2c_bus->dev; - unsigned bus = i2c_bus->bus; + unsigned int bus = i2c_bus->bus; int addr, rc, i; u8 reg; - /* prevent i2c xfer attempts after device is disconnected - some fe's try to do i2c writes/reads from their release - interfaces when called in disconnect path */ + /* + * prevent i2c xfer attempts after device is disconnected + * some fe's try to do i2c writes/reads from their release + * interfaces when called in disconnect path + */ if (dev->disconnected) return -ENODEV; @@ -624,12 +623,13 @@ static inline unsigned long em28xx_hash_mem(char *buf, int length, int bits) if (len == length) { c = (char)len; len = -1; - } else + } else { c = *buf++; + } l = (l << 8) | c; len++; if ((len & (32 / 8 - 1)) == 0) - hash = ((hash^l) * 0x9e370001UL); + hash = ((hash ^ l) * 0x9e370001UL); } while (len); return (hash >> (32 - bits)) & 0xffffffffUL; @@ -639,7 +639,7 @@ static inline unsigned long em28xx_hash_mem(char *buf, int length, int bits) * Helper function to read data blocks from i2c clients with 8 or 16 bit * address width, 8 bit register width and auto incrementation been activated */ -static int em28xx_i2c_read_block(struct em28xx *dev, unsigned bus, u16 addr, +static int em28xx_i2c_read_block(struct em28xx *dev, unsigned int bus, u16 addr, bool addr_w16, u16 len, u8 *data) { int remain = len, rsize, rsize_max, ret; @@ -651,7 +651,8 @@ static int em28xx_i2c_read_block(struct em28xx *dev, unsigned bus, u16 addr, /* Select address */ buf[0] = addr >> 8; buf[1] = addr & 0xff; - ret = i2c_master_send(&dev->i2c_client[bus], buf + !addr_w16, 1 + addr_w16); + ret = i2c_master_send(&dev->i2c_client[bus], + buf + !addr_w16, 1 + addr_w16); if (ret < 0) return ret; /* Read data */ @@ -676,7 +677,7 @@ static int em28xx_i2c_read_block(struct em28xx *dev, unsigned bus, u16 addr, return len; } -static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned bus, +static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned int bus, u8 **eedata, u16 *eedata_len) { const u16 len = 256; @@ -704,7 +705,7 @@ static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned bus, } data = kzalloc(len, GFP_KERNEL); - if (data == NULL) + if (!data) return -ENOMEM; /* Read EEPROM content */ @@ -796,7 +797,10 @@ static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned bus, return 0; } - /* TODO: decrypt eeprom data for camera bridges (em25xx, em276x+) */ + /* + * TODO: decrypt eeprom data for camera bridges + * (em25xx, em276x+) + */ } else if (!dev->eeprom_addrwidth_16bit && data[0] == 0x1a && data[1] == 0xeb && @@ -886,8 +890,8 @@ static u32 functionality(struct i2c_adapter *i2c_adap) { struct em28xx_i2c_bus *i2c_bus = i2c_adap->algo_data; - if ((i2c_bus->algo_type == EM28XX_I2C_ALGO_EM28XX) || - (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM25XX_BUS_B)) { + if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM28XX || + i2c_bus->algo_type == EM28XX_I2C_ALGO_EM25XX_BUS_B) { return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; } else if (i2c_bus->algo_type == EM28XX_I2C_ALGO_EM2800) { return (I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL) & @@ -920,7 +924,7 @@ static const struct i2c_client em28xx_client_template = { * incomplete list of known devices */ static char *i2c_devs[128] = { - [0x1c >> 1] = "lgdt330x", + [0x1c >> 1] = "lgdt330x", [0x3e >> 1] = "remote IR sensor", [0x4a >> 1] = "saa7113h", [0x52 >> 1] = "drxk", @@ -943,7 +947,7 @@ static char *i2c_devs[128] = { * do_i2c_scan() * check i2c address range for devices */ -void em28xx_do_i2c_scan(struct em28xx *dev, unsigned bus) +void em28xx_do_i2c_scan(struct em28xx *dev, unsigned int bus) { u8 i2c_devicelist[128]; unsigned char buf; @@ -971,13 +975,14 @@ void em28xx_do_i2c_scan(struct em28xx *dev, unsigned bus) * em28xx_i2c_register() * register i2c bus */ -int em28xx_i2c_register(struct em28xx *dev, unsigned bus, +int em28xx_i2c_register(struct em28xx *dev, unsigned int bus, enum em28xx_i2c_algo_type algo_type) { int retval; - BUG_ON(!dev->em28xx_write_regs || !dev->em28xx_read_reg); - BUG_ON(!dev->em28xx_write_regs_req || !dev->em28xx_read_reg_req); + if (WARN_ON(!dev->em28xx_write_regs || !dev->em28xx_read_reg || + !dev->em28xx_write_regs_req || !dev->em28xx_read_reg_req)) + return -ENODEV; if (bus >= NUM_I2C_BUSES) return -ENODEV; @@ -1004,8 +1009,9 @@ int em28xx_i2c_register(struct em28xx *dev, unsigned bus, /* Up to now, all eeproms are at bus 0 */ if (!bus) { - retval = em28xx_i2c_eeprom(dev, bus, &dev->eedata, &dev->eedata_len); - if ((retval < 0) && (retval != -ENODEV)) { + retval = em28xx_i2c_eeprom(dev, bus, + &dev->eedata, &dev->eedata_len); + if (retval < 0 && retval != -ENODEV) { dev_err(&dev->intf->dev, "%s: em28xx_i2_eeprom failed! retval [%d]\n", __func__, retval); @@ -1022,7 +1028,7 @@ int em28xx_i2c_register(struct em28xx *dev, unsigned bus, * em28xx_i2c_unregister() * unregister i2c_bus */ -int em28xx_i2c_unregister(struct em28xx *dev, unsigned bus) +int em28xx_i2c_unregister(struct em28xx *dev, unsigned int bus) { if (bus >= NUM_I2C_BUSES) return -ENODEV; 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