Davidlohr Bueso [Sat, 17 May 2014 13:19:22 +0000 (23:19 +1000)]
blackfin/ptrace: call find_vma with the mmap_sem held
Performing vma lookups without taking the mm->mmap_sem is asking for
trouble. While doing the search, the vma in question can be modified or
even removed before returning to the caller. Take the lock (shared) in
order to avoid races while iterating through the vmacache and/or rbtree.
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com> Cc: Steven Miao <realmz6@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
rtc: s5m: consolidate two device type switch statements
In probe the configuration of driver for different chipsets was done in
two switch (pdata->device_type) statements. Consolidate them into one
switch statement to increase code readability.
Additionally check the return value of regmap_irq_get_virq and exit probe
on error.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Lee Jones <lee.jones@linaro.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Sangbeom Kim <sbkim73@samsung.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Add support for S2MPS14 to the rtc-s5m driver. Differences in S2MPS14
(in comparison to S5M8767):
- Layout of registers;
- Lack of century support for time and alarms (7 registers used for
storing time/alarm);
- Two buffer control registers: WUDR and RUDR;
- No register for enabling writing time;
- RTC interrupts are reported in main PMIC I2C device;
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Lee Jones <lee.jones@linaro.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Sangbeom Kim <sbkim73@samsung.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Prepare for adding support for S2MPS14 RTC device to the
rtc-s5m driver:
1. Add a map of registers used by the driver which differ between
the chipsets (S5M876X and S2MPS14).
2. Move code of checking for alarm pending to separate function.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Lee Jones <lee.jones@linaro.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Sangbeom Kim <sbkim73@samsung.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Set the time needed for updating alarm and time registers to 0.45 ms.
The default is 7.32 ms which is too long and leads to warnings when
setting alarm or time:
s5m-rtc: waiting for UDR update, reached max number of retries
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Lee Jones <lee.jones@linaro.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Sangbeom Kim <sbkim73@samsung.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
rtc: s5m: remove undocumented time init on first boot
Remove the code for initializing time if this is first boot.
The code for detecting first boot uses undocumented field RTC_TCON in
RTC_UDR_CON register. According to S5M8767's datasheet this field is
reserved. On S2MPS14 it is not documented at all. On device first boot
the registers will be initialized with reset value (2000-01-01 00:00:00).
The code might work on S5M8763 but still this does not look like a task
for RTC driver.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Lee Jones <lee.jones@linaro.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Sangbeom Kim <sbkim73@samsung.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Prepare for adding support for S2MPS14 RTC device to the rtc-s5m driver:
1. Rename SEC* symbols to S5M.
2. Add S5M prefix to some of defines which are different between S5M876X
and S2MPS14.
This is only a rename-like patch, new code is not added.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Lee Jones <lee.jones@linaro.org> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Sangbeom Kim <sbkim73@samsung.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Andrew Morton [Sat, 17 May 2014 13:19:15 +0000 (23:19 +1000)]
lib/test_bpf.c: don't use gcc union shortcut
Older gcc's (mine is gcc-4.4.4) make a mess of this.
lib/test_bpf.c:74: error: unknown field 'insns' specified in initializer
lib/test_bpf.c:75: warning: missing braces around initializer
lib/test_bpf.c:75: warning: (near initialization for 'tests[0].<anonymous>.insns[0]')
lib/test_bpf.c:76: error: extra brace group at end of initializer
lib/test_bpf.c:76: error: (near initialization for 'tests[0].<anonymous>')
lib/test_bpf.c:76: warning: excess elements in union initializer
lib/test_bpf.c:76: warning: (near initialization for 'tests[0].<anonymous>')
lib/test_bpf.c:77: error: extra brace group at end of initializer
Cc: Alexei Starovoitov <ast@plumgrid.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Andrew Morton [Sat, 17 May 2014 13:19:15 +0000 (23:19 +1000)]
mm/page_io.c: work around gcc bug
gcc-4.4.4 (at least) screws up this initialization.
mm/page_io.c: In function '__swap_writepage':
mm/page_io.c:277: error: unknown field 'bvec' specified in initializer
mm/page_io.c:278: warning: excess elements in struct initializer
mm/page_io.c:278: warning: (near initialization for 'from')
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