soc: ti: pm33xx: Fix static checker warnings

The patch fixes a bunch of static checker warnings.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/drivers/soc/ti/pm33xx.c b/drivers/soc/ti/pm33xx.c
index bb77c220b6f82b34c81cdf9f2e43bef82bef10b3..5f3a4499cf405bedea44e78dcd083b1a100a6e9e 100644 (file)
--- a/drivers/soc/ti/pm33xx.c
+++ b/drivers/soc/ti/pm33xx.c
@@ -252,7 +252,7 @@ static int am33xx_pm_begin(suspend_state_t state)
        if (state == PM_SUSPEND_MEM && pm_ops->check_off_mode_enable()) {
                nvmem = devm_nvmem_device_get(&omap_rtc->dev,
                                              "omap_rtc_scratch0");
-               if (nvmem)
+               if (!IS_ERR(nvmem))
                        nvmem_device_write(nvmem, RTC_SCRATCH_MAGIC_REG * 4, 4,
                                           (void *)&rtc_magic_val);
                rtc_only_idle = 1;
@@ -278,9 +278,12 @@ static void am33xx_pm_end(void)
        struct nvmem_device *nvmem;
 
        nvmem = devm_nvmem_device_get(&omap_rtc->dev, "omap_rtc_scratch0");
+       if (IS_ERR(nvmem))
+               return;
+
        m3_ipc->ops->finish_low_power(m3_ipc);
        if (rtc_only_idle) {
-               if (retrigger_irq)
+               if (retrigger_irq) {
                        /*
                         * 32 bits of Interrupt Set-Pending correspond to 32
                         * 32 interrupts. Compute the bit offset of the
@@ -291,8 +294,10 @@ static void am33xx_pm_end(void)
                        writel_relaxed(1 << (retrigger_irq & 31),
                                       gic_dist_base + GIC_INT_SET_PENDING_BASE
                                       + retrigger_irq / 32 * 4);
-                       nvmem_device_write(nvmem, RTC_SCRATCH_MAGIC_REG * 4, 4,
-                                          (void *)&val);
+               }
+
+               nvmem_device_write(nvmem, RTC_SCRATCH_MAGIC_REG * 4, 4,
+                                  (void *)&val);
        }
 
        rtc_only_idle = 0;
@@ -415,7 +420,7 @@ static int am33xx_pm_rtc_setup(void)
 
                nvmem = devm_nvmem_device_get(&omap_rtc->dev,
                                              "omap_rtc_scratch0");
-               if (nvmem) {
+               if (!IS_ERR(nvmem)) {
                        nvmem_device_read(nvmem, RTC_SCRATCH_MAGIC_REG * 4,
                                          4, (void *)&rtc_magic_val);
                        if ((rtc_magic_val & 0xffff) != RTC_REG_BOOT_MAGIC)