There are no mutex protection for the dev->map_hash while calling
the drm_ht_find_item in the function drm_do_vm_fault. So try to
mutex firstly and then find the list for using to avoid this race
condition.
Signed-off-by: Chen Jun
---
drivers/gpu/drm/drm_vm.c | 11 +--
1 files changed
On Thu, 2013-09-12 at 22:40 -0700, Eric Dumazet wrote:
> On Fri, 2013-09-13 at 05:47 -0400, Jun Chen wrote:
> > On Thu, 2013-09-12 at 05:00 -0700, Eric Dumazet wrote:
> > > On Thu, 2013-09-12 at 12:32 -0400, Jun Chen wrote:
> > > > When try to add node to list in
On Thu, 2013-09-12 at 05:00 -0700, Eric Dumazet wrote:
> On Thu, 2013-09-12 at 12:32 -0400, Jun Chen wrote:
> > When try to add node to list in __inet_hash_nolisten function, first get the
> > list and then to lock for using, but in extremeness case, others can del
> >
When try to add node to list in __inet_hash_nolisten function, first get the
list and then to lock for using, but in extremeness case, others can del this
node before locking it, then the node should be null.So this patch try to lock
firstly and then get the list for using to avoid this race condi
On Mon, 2013-06-17 at 06:21 -0700, Eric Dumazet wrote:
> On Mon, 2013-06-17 at 14:52 -0400, Jun Chen wrote:
> > On Mon, 2013-06-17 at 03:29 -0700, Eric Dumazet wrote:
> > > On Mon, 2013-06-17 at 13:29 -0400, Jun Chen wrote:
> > > > >
> > > > hi,
>
On Mon, 2013-06-17 at 03:29 -0700, Eric Dumazet wrote:
> On Mon, 2013-06-17 at 13:29 -0400, Jun Chen wrote:
> > >
> > hi,
> > When the condition of tcp_win_from_space(skb->truesize) > skb->len is
> > true but the before(start, TCP_SKB_CB(skb)->seq) is
On Mon, 2013-06-17 at 01:15 -0700, Eric Dumazet wrote:
> On Mon, 2013-06-17 at 10:18 -0400, Jun Chen wrote:
> > When search the first skb to collapse,the condition of overlap to the next
> > one have been
> > reached,but the start is less than TCP_SKB_CB(skb)->seq at this
When search the first skb to collapse,the condition of overlap to the next one
have been
reached,but the start is less than TCP_SKB_CB(skb)->seq at this time, then
followed process
will trigger the BUG_ON of the offset(start - TCP_SKB_CB(skb)->seq).
So this patch add one check (! before(start,TC
The list_for_each_entry_rcu should be guarded by rcu_read_lock().This patch add
rcu_read_lock to protect the list_for_each_entry_rcu.
Signed-off-by: Chen Jun
---
kernel/events/core.c |2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/kernel/events/core.c b/kernel/events/c
On Fri, 2012-12-21 at 19:06 +, Grant Likely wrote:
> On Fri, 21 Dec 2012 12:39:52 -0500, Jun Chen wrote:
> > On Wed, 2012-12-19 at 16:21 +, Grant Likely wrote:
> > > On Wed, 19 Dec 2012 09:04:16 +, Mark Brown
> > > wrote:
> > > > On Wed, Dec
On Wed, 2012-12-19 at 16:21 +, Grant Likely wrote:
> On Wed, 19 Dec 2012 09:04:16 +, Mark Brown
> wrote:
> > On Wed, Dec 19, 2012 at 04:44:03AM -0500, Jun Chen wrote:
> >
> > > This spi_alloc_device function will be called in the spi_new_device
> > >
On Tue, 2012-12-18 at 15:26 +, Mark Brown wrote:
> On Tue, Dec 18, 2012 at 11:29:34AM -0500, Jun Chen wrote:
>
> > * @master: Controller to which device is connected
> > + * device_was_children_of_master is flag which the device is registed
> > + * as the children of
Because there are two aim when allocating the new device, one is for children
of master,
other is for master. So this patch add one flag to indicate different purpose.
Signed-off-by: Bi Chao
Signed-off-by: Chen Jun
---
drivers/spi/spi.c | 16 +++-
include/linux/spi/spi.h |
On Thu, 2012-11-22 at 11:08 +, Alan Cox wrote:
> On Thu, 22 Nov 2012 06:19:23 -0500
> Jun Chen wrote:
>
> >
> > This patch add modem power off function in the reboot process
> > according registering reboot callback to the reboot_notifier_list.
> > Also re
This patch add modem power off function in the reboot process according
registering
reboot callback to the reboot_notifier_list. Also realizing the spi shutdown
function.
Signed-off-by: Bi Chao
Signed-off-by: Chen Jun
---
drivers/tty/serial/ifx6x60.c | 56 ++
This patch add modem power off function in the reboot process according
registering
reboot callback to the reboot_notifier_list. Also realizing the spi shutdown
function.
Signed-off-by: Bi Chao
Signed-off-by: Chen Jun
---
drivers/tty/serial/ifx6x60.c | 39 ++
This patch check whether the fifo lenth is empty before writing new data to
fifo.If condition
is true,ifx_spi_write need to trigger one mrdy_assert. If condition is
false,the mrdy_assert
will be trigger by the next ifx_spi_io.
Cc: Bi Chao
Signed-off-by: Chen Jun
---
drivers/tty/serial/ifx6x60
The Medfield Platform implements a recovery procedure consisting in an
escalation
from simple and light recovery procedures to stronger ones with increased
visibility
and impact to end-user.After platform find some problem from Modem,such as no
response,
platform will try do modem warm reset.If
This patch check whether the fifo lenth is empty before writing new data to
fifo.If condition
is true,ifx_spi_write need to trigger one mrdy_assert. If condition is
false,the mrdy_assert
will be trigger by the next ifx_spi_io.
Cc: Bi Chao
Signed-off-by: Chen Jun
---
drivers/tty/serial/ifx6x60
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