kernel/linux.git/drivers/net/irda, branch v4.3.1

irda: ali-ircc: Fix deadlock in ali_ircc_sir_change_speed()

2015-09-11T23:18:33+00:00

ali_ircc_sir_change_speed() is always called with self->lock held, so acquiring the lock inside it leads to unavoidable deadlock. Call graph: ali_ircc_sir_change_speed() is called from ali_ircc_change_speed() ali_ircc_fir_hard_xmit() under spin_lock_irqsave(&self->lock, flags); ali_ircc_sir_hard_xmit() under spin_lock_irqsave(&self->lock, flags); ali_ircc_net_ioctl() under spin_lock_irqsave(&self->lock, flags); ali_ircc_dma_xmit_complete() ali_ircc_fir_interrupt() ali_ircc_interrupt() under spin_lock(&self->lock); ali_ircc_sir_write_wakeup() ali_ircc_sir_interrupt() ali_ircc_interrupt() under spin_lock(&self->lock); The patch removes spin_lock/unlock from ali_ircc_sir_change_speed(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Signed-off-by: David S. Miller

irda: irda-usb: use msecs_to_jiffies for conversions

2015-05-25T21:39:21+00:00

API compliance scanning with coccinelle flagged: Converting milliseconds to jiffies by "val * HZ / 1000" is technically is not a clean solution as it does not handle all corner cases correctly. By changing the conversion to use msecs_to_jiffies(val) conversion is correct in all cases. in the current code: mod_timer(&self->rx_defer_timer, jiffies + (10 * HZ / 1000)); for HZ < 100 (e.g. CONFIG_HZ == 64|32 in alpha) this effectively results in no delay at all. Patch was compile tested for x86_64_defconfig (implies CONFIG_USB_IRDA=m) Patch is against 4.1-rc4 (localversion-next is -next-20150522) Signed-off-by: Nicholas Mc Guire Signed-off-by: David S. Miller

irda: vlsi_ir: Replace timeval with ktime_t

2015-01-12T02:39:40+00:00

The vlsi ir driver uses 'timeval', which we try to remove in the kernel because all 32-bit time types will break in the year 2038. This patch also changes do_gettimeofday() to ktime_get() accordingly, since ktime_get returns a ktime_t, but do_gettimeofday returns a struct timeval, and the other reason is that ktime_get() uses the monotonic clock. This patch uses ktime_us_delta to get the elapsed time of microsecond, and uses div_s64_rem to get what seconds & microseconds time elapsed for printing. This patch also changes the function 'vlsi_hard_start_xmit' to do the same things as the others drivers, that is passing the remaining time into udelay() instead of looping until enough time has passed. Signed-off-by: Chunyan Zhang Reviewed-by: Arnd Bergmann Signed-off-by: David S. Miller

irda: stir4200: Replace timeval with ktime_t

2015-01-12T02:39:40+00:00

The stir4200 driver uses 'timeval', which we try to remove in the kernel because all 32-bit time types will break in the year 2038. This patch also changes do_gettimeofday() to ktime_get() accordingly, since ktime_get returns a ktime_t, but do_gettimeofday returns a struct timeval, and the other reason is that ktime_get() uses the monotonic clock. This patch uses ktime_us_delta to get the elapsed time of microsecond. Signed-off-by: Chunyan Zhang Reviewed-by: Arnd Bergmann Signed-off-by: David S. Miller

irda: nsc-ircc: Replace timeval with ktime_t

2015-01-12T02:39:40+00:00

The nsc ircc driver uses 'timeval', which we try to remove in the kernel because all 32-bit time types will break in the year 2038. This patch also changes do_gettimeofday() to ktime_get() accordingly, since ktime_get returns a ktime_t, but do_gettimeofday returns a struct timeval, and the other reason is that ktime_get() uses the monotonic clock. This patch uses ktime_us_delta to get the elapsed time, and in this way it no longer needs to check for the overflow, because ktime_us_delta returns time difference of microsecond. Signed-off-by: Chunyan Zhang Reviewed-by: Arnd Bergmann Signed-off-by: David S. Miller

irda: irda-usb: Replace timeval with ktime_t

2015-01-12T02:39:40+00:00

The irda usb driver uses 'timeval', which we try to remove in the kernel because all 32-bit time types will break in the year 2038. This patch also changes do_gettimeofday() to ktime_get() accordingly, since ktime_get returns a ktime_t, but do_gettimeofday returns a struct timeval, and the other reason is that ktime_get() uses the monotonic clock. This patch uses ktime_us_delta to get the elapsed time, and in this way it no longer needs to check for the overflow, because ktime_us_delta returns time difference of microsecond. Signed-off-by: Chunyan Zhang Reviewed-by: Arnd Bergmann Signed-off-by: David S. Miller

irda: ali-ircc: Replace timeval with ktime_t

2015-01-12T02:39:40+00:00

The ali ircc driver uses 'timeval', which we try to remove in the kernel because all 32-bit time types will break in the year 2038. This patch also changes do_gettimeofday() to ktime_get() accordingly, since ktime_get returns a ktime_t, but do_gettimeofday returns a struct timeval, and the other reason is that ktime_get() uses the monotonic clock. This patch uses ktime_us_delta to get the elapsed time, and in this way it no longer needs to check for the overflow, because ktime_us_delta returns time difference of microsecond. Signed-off-by: Chunyan Zhang Reviewed-by: Arnd Bergmann Signed-off-by: David S. Miller

irda: Removed all unused timeval variables

2015-01-12T02:39:40+00:00

In the file au1k_ir.c & via-ircc.h, there were two unused definitions of the timeval type members, this commit therefore removes this unneeded code. In other three files, the same problem is the rx_time member is only ever written, never read, so removed it entirely. Signed-off-by: Chunyan Zhang Reviewed-by: Arnd Bergmann Signed-off-by: David S. Miller

arm: sa1100: move irda header to linux/platform_data

2014-12-30T23:44:07+00:00

In the end asm/mach/irda.h header is not used by anybody except sa1100. Move the header to the platform data includes dir and rename it to irda-sa11x0.h. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: David S. Miller

Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2014-12-15T00:10:09+00:00

Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev__once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...