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2019-07-22cpufreq: ap806: Add NULL check after kcallocHariprasad Kelam1-0/+2
Add NULL check after kcalloc. Fix below issue reported by coccicheck ./drivers/cpufreq/armada-8k-cpufreq.c:138:1-12: alloc with no test, possible model on line 151 Signed-off-by: Hariprasad Kelam <hariprasad.kelam@gmail.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2019-04-08cpufreq: ap806: fix possible object reference leakWen Yang1-0/+1
The call to of_find_compatible_node returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./drivers/cpufreq/armada-8k-cpufreq.c:187:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 130, but without a corresponding object release within this function. ./drivers/cpufreq/armada-8k-cpufreq.c:191:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 130, but without a corresponding object release within this function. Signed-off-by: Wen Yang <wen.yang99@zte.com.cn> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Gregory Clement <gregory.clement@bootlin.com> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2019-02-25cpufreq: ap806: add missing of_node_put after of_device_is_availableJulia Lawall1-1/+3
Add an of_node_put when a tested device node is not available. The semantic patch that fixes this problem is as follows (http://coccinelle.lip6.fr): // <smpl> @@ identifier f; local idexpression e; expression x; @@ e = f(...); ... when != of_node_put(e) when != x = e when != e = x when any if (<+...of_device_is_available(e)...+>) { ... when != of_node_put(e) ( return e; | + of_node_put(e); return ...; ) } // </smpl> Fixes: f525a670533d9 ("cpufreq: ap806: add cpufreq driver for Armada 8K") Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
2019-02-07cpufreq: ap806: add cpufreq driver for Armada 8KGregory CLEMENT1-0/+204
Add cpufreq driver for Marvell AP-806 found on Aramda 8K. The AP-806 has DFS (Dynamic Frequency Scaling) with coupled clock domain for two clusters, so this driver will directly use generic cpufreq-dt driver as backend. Based on the work of Omri Itach <omrii@marvell.com>. Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>