* [PATCH AUTOSEL 4.14 09/21] Input: cyttsp4_core - fix use after free bug [not found] <20191122194931.24732-1-sashal@kernel.org> @ 2019-11-22 19:49 ` Sasha Levin 2019-11-22 19:49 ` [PATCH AUTOSEL 4.14 21/21] Input: synaptics - enable RMI mode for X1 Extreme 2nd Generation Sasha Levin 1 sibling, 0 replies; 4+ messages in thread From: Sasha Levin @ 2019-11-22 19:49 UTC (permalink / raw) To: linux-kernel, stable; +Cc: Pan Bian, Dmitry Torokhov, Sasha Levin, linux-input From: Pan Bian <bianpan2016@163.com> [ Upstream commit 79aae6acbef16f720a7949f8fc6ac69816c79d62 ] The device md->input is used after it is released. Setting the device data to NULL is unnecessary as the device is never used again. Instead, md->input should be assigned NULL to avoid accessing the freed memory accidently. Besides, checking md->si against NULL is superfluous as it points to a variable address, which cannot be NULL. Signed-off-by: Pan Bian <bianpan2016@163.com> Link: https://lore.kernel.org/r/1572936379-6423-1-git-send-email-bianpan2016@163.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/input/touchscreen/cyttsp4_core.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/input/touchscreen/cyttsp4_core.c b/drivers/input/touchscreen/cyttsp4_core.c index beaf61ce775b7..a9af83de88bb2 100644 --- a/drivers/input/touchscreen/cyttsp4_core.c +++ b/drivers/input/touchscreen/cyttsp4_core.c @@ -1972,11 +1972,6 @@ static int cyttsp4_mt_probe(struct cyttsp4 *cd) /* get sysinfo */ md->si = &cd->sysinfo; - if (!md->si) { - dev_err(dev, "%s: Fail get sysinfo pointer from core p=%p\n", - __func__, md->si); - goto error_get_sysinfo; - } rc = cyttsp4_setup_input_device(cd); if (rc) @@ -1986,8 +1981,6 @@ static int cyttsp4_mt_probe(struct cyttsp4 *cd) error_init_input: input_free_device(md->input); -error_get_sysinfo: - input_set_drvdata(md->input, NULL); error_alloc_failed: dev_err(dev, "%s failed.\n", __func__); return rc; -- 2.20.1 ^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH AUTOSEL 4.14 21/21] Input: synaptics - enable RMI mode for X1 Extreme 2nd Generation [not found] <20191122194931.24732-1-sashal@kernel.org> 2019-11-22 19:49 ` [PATCH AUTOSEL 4.14 09/21] Input: cyttsp4_core - fix use after free bug Sasha Levin @ 2019-11-22 19:49 ` Sasha Levin 2019-11-22 19:56 ` Dmitry Torokhov 1 sibling, 1 reply; 4+ messages in thread From: Sasha Levin @ 2019-11-22 19:49 UTC (permalink / raw) To: linux-kernel, stable Cc: Lyude Paul, Dmitry Torokhov, Sasha Levin, linux-input From: Lyude Paul <lyude@redhat.com> [ Upstream commit 768ea88bcb235ac3a92754bf82afcd3f12200bcc ] Just got one of these for debugging some unrelated issues, and noticed that Lenovo seems to have gone back to using RMI4 over smbus with Synaptics touchpads on some of their new systems, particularly this one. So, let's enable RMI mode for the X1 Extreme 2nd Generation. Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://lore.kernel.org/r/20191115221814.31903-1-lyude@redhat.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/input/mouse/synaptics.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index 7db53eab70121..1962db0431dea 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -180,6 +180,7 @@ static const char * const smbus_pnp_ids[] = { "LEN0096", /* X280 */ "LEN0097", /* X280 -> ALPS trackpoint */ "LEN009b", /* T580 */ + "LEN0402", /* X1 Extreme 2nd Generation */ "LEN200f", /* T450s */ "LEN2054", /* E480 */ "LEN2055", /* E580 */ -- 2.20.1 ^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH AUTOSEL 4.14 21/21] Input: synaptics - enable RMI mode for X1 Extreme 2nd Generation 2019-11-22 19:49 ` [PATCH AUTOSEL 4.14 21/21] Input: synaptics - enable RMI mode for X1 Extreme 2nd Generation Sasha Levin @ 2019-11-22 19:56 ` Dmitry Torokhov 2019-11-25 13:34 ` Sasha Levin 0 siblings, 1 reply; 4+ messages in thread From: Dmitry Torokhov @ 2019-11-22 19:56 UTC (permalink / raw) To: Sasha Levin; +Cc: linux-kernel, stable, Lyude Paul, linux-input On Fri, Nov 22, 2019 at 02:49:31PM -0500, Sasha Levin wrote: > From: Lyude Paul <lyude@redhat.com> > > [ Upstream commit 768ea88bcb235ac3a92754bf82afcd3f12200bcc ] > > Just got one of these for debugging some unrelated issues, and noticed > that Lenovo seems to have gone back to using RMI4 over smbus with > Synaptics touchpads on some of their new systems, particularly this one. > So, let's enable RMI mode for the X1 Extreme 2nd Generation. > > Signed-off-by: Lyude Paul <lyude@redhat.com> > Link: https://lore.kernel.org/r/20191115221814.31903-1-lyude@redhat.com > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > Signed-off-by: Sasha Levin <sashal@kernel.org> This will be reverted, do not pick up for stable. > --- > drivers/input/mouse/synaptics.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c > index 7db53eab70121..1962db0431dea 100644 > --- a/drivers/input/mouse/synaptics.c > +++ b/drivers/input/mouse/synaptics.c > @@ -180,6 +180,7 @@ static const char * const smbus_pnp_ids[] = { > "LEN0096", /* X280 */ > "LEN0097", /* X280 -> ALPS trackpoint */ > "LEN009b", /* T580 */ > + "LEN0402", /* X1 Extreme 2nd Generation */ > "LEN200f", /* T450s */ > "LEN2054", /* E480 */ > "LEN2055", /* E580 */ > -- > 2.20.1 > Thanks. -- Dmitry ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH AUTOSEL 4.14 21/21] Input: synaptics - enable RMI mode for X1 Extreme 2nd Generation 2019-11-22 19:56 ` Dmitry Torokhov @ 2019-11-25 13:34 ` Sasha Levin 0 siblings, 0 replies; 4+ messages in thread From: Sasha Levin @ 2019-11-25 13:34 UTC (permalink / raw) To: Dmitry Torokhov; +Cc: linux-kernel, stable, Lyude Paul, linux-input On Fri, Nov 22, 2019 at 11:56:02AM -0800, Dmitry Torokhov wrote: >On Fri, Nov 22, 2019 at 02:49:31PM -0500, Sasha Levin wrote: >> From: Lyude Paul <lyude@redhat.com> >> >> [ Upstream commit 768ea88bcb235ac3a92754bf82afcd3f12200bcc ] >> >> Just got one of these for debugging some unrelated issues, and noticed >> that Lenovo seems to have gone back to using RMI4 over smbus with >> Synaptics touchpads on some of their new systems, particularly this one. >> So, let's enable RMI mode for the X1 Extreme 2nd Generation. >> >> Signed-off-by: Lyude Paul <lyude@redhat.com> >> Link: https://lore.kernel.org/r/20191115221814.31903-1-lyude@redhat.com >> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> >> Signed-off-by: Sasha Levin <sashal@kernel.org> > >This will be reverted, do not pick up for stable. I'll drop it, thanks! -- Thanks, Sasha ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2019-11-25 13:34 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- [not found] <20191122194931.24732-1-sashal@kernel.org> 2019-11-22 19:49 ` [PATCH AUTOSEL 4.14 09/21] Input: cyttsp4_core - fix use after free bug Sasha Levin 2019-11-22 19:49 ` [PATCH AUTOSEL 4.14 21/21] Input: synaptics - enable RMI mode for X1 Extreme 2nd Generation Sasha Levin 2019-11-22 19:56 ` Dmitry Torokhov 2019-11-25 13:34 ` Sasha Levin
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