From: Ard Biesheuvel <ardb@kernel.org>

Registering an IRQ requires the string buffer containing the name to
remain allocated, as the name is not copied into another buffer.

So let's add a irq_name field to the data struct instead, which is
guaranteed to have the appropriate lifetime.

Cc: Thara Gopinath <redacted>
Cc: Bjorn Andersson <redacted>
Cc: Andy Gross <agross@kernel.org>
Cc: linux-arm-msm@vger.kernel.org
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Thara Gopinath <redacted>
Tested-by: Steev Klimaszewski <redacted>
Signed-off-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
---
vzapolskiy: rebased, added all collected tags and resend the change from Ard

  drivers/cpufreq/qcom-cpufreq-hw.c | 8 ++++----
  1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
index a2be0df7e174..3b5835336658 100644
--- a/drivers/cpufreq/qcom-cpufreq-hw.c
+++ b/drivers/cpufreq/qcom-cpufreq-hw.c

@@ -46,6 +46,7 @@ struct qcom_cpufreq_data {
  	 */
  	struct mutex throttle_lock;
  	int throttle_irq;
+	char irq_name[15];
  	bool cancel_throttle;
  	struct delayed_work throttle_work;
  	struct cpufreq_policy *policy;

@@ -375,7 +376,6 @@ static int qcom_cpufreq_hw_lmh_init(struct cpufreq_policy *policy, int index)
  {
  	struct qcom_cpufreq_data *data = policy->driver_data;
  	struct platform_device *pdev = cpufreq_get_driver_data();
-	char irq_name[15];
  	int ret;
  
  	/*

@@ -392,11 +392,11 @@ static int qcom_cpufreq_hw_lmh_init(struct cpufreq_policy *policy, int index)
  	mutex_init(&data->throttle_lock);
  	INIT_DEFERRABLE_WORK(&data->throttle_work, qcom_lmh_dcvs_poll);
  
-	snprintf(irq_name, sizeof(irq_name), "dcvsh-irq-%u", policy->cpu);
+	snprintf(data->irq_name, sizeof(data->irq_name), "dcvsh-irq-%u", policy->cpu);