kernel/linux.git/drivers/soc/qcom/pdr_interface.c, branch v5.7.4Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v5.7.42020-03-16T21:56:57+00:00soc: qcom: pdr: Avoid uninitialized use of found in pdr_indication_cb2020-03-16T21:56:57+00:00Nathan Chancellornatechancellor@gmail.com2020-03-16T20:48:55+00:00urn:sha1:e69b3bede1b2f754a7d04383cbbc5a8b7327af79
Clang warns:
../drivers/soc/qcom/pdr_interface.c:316:2: warning: variable 'found' is
used uninitialized whenever 'for' loop exits because its condition is
false [-Wsometimes-uninitialized]
list_for_each_entry(pds, &pdr->lookups, node) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../include/linux/list.h:624:7: note: expanded from macro
'list_for_each_entry'
&pos->member != (head);
^~~~~~~~~~~~~~~~~~~~~~
../drivers/soc/qcom/pdr_interface.c:325:7: note: uninitialized use
occurs here
if (!found)
^~~~~
../drivers/soc/qcom/pdr_interface.c:316:2: note: remove the condition if
it is always true
list_for_each_entry(pds, &pdr->lookups, node) {
^
../include/linux/list.h:624:7: note: expanded from macro
'list_for_each_entry'
&pos->member != (head);
^
../drivers/soc/qcom/pdr_interface.c:309:12: note: initialize the
variable 'found' to silence this warning
bool found;
^
= 0
1 warning generated.
Initialize found to false to fix this warning.
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Fixes: fbe639b44a82 ("soc: qcom: Introduce Protection Domain Restart helpers")
Link: https://github.com/ClangBuiltLinux/linux/issues/933
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Link: https://lore.kernel.org/r/20200316204855.15611-1-natechancellor@gmail.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
soc: qcom: Introduce Protection Domain Restart helpers2020-03-15T05:38:42+00:00Sibi Sankarsibis@codeaurora.org2020-03-12T12:08:40+00:00urn:sha1:fbe639b44a82755d639df1c5d147c93f02ac5a0f
Qualcomm SoCs (starting with MSM8998) allow for multiple protection domains
to run on the same Q6 sub-system. This allows for services like ATH10K WLAN
FW to have their own separate address space and crash/recover without
disrupting the modem and other PDs running on the same sub-system. The PDR
helpers introduces an abstraction that allows for tracking/controlling the
life cycle of protection domains running on various Q6 sub-systems.
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Link: https://lore.kernel.org/r/20200312120842.21991-2-sibis@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>