zram: fix race between backing_dev_show and backing_dev_store

[linux.git] / drivers / mfd / db8500-prcmu.c

diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index 518439c7982671d2360b343f9fe9700c89878bb4..dfac6afa82ca552b843a26cf62191a3ad93109b1 100644 (file)
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -1694,21 +1694,41 @@ static long round_clock_rate(u8 clock, unsigned long rate)
        return rounded_rate;
 }
 
-static const unsigned long armss_freqs[] = {
+static const unsigned long db8500_armss_freqs[] = {
        200000000,
        400000000,
        800000000,
        998400000
 };
 
+/* The DB8520 has slightly higher ARMSS max frequency */
+static const unsigned long db8520_armss_freqs[] = {
+       200000000,
+       400000000,
+       800000000,
+       1152000000
+};
+
+
+
 static long round_armss_rate(unsigned long rate)
 {
        unsigned long freq = 0;
+       const unsigned long *freqs;
+       int nfreqs;
        int i;
 
+       if (fw_info.version.project == PRCMU_FW_PROJECT_U8520) {
+               freqs = db8520_armss_freqs;
+               nfreqs = ARRAY_SIZE(db8520_armss_freqs);
+       } else {
+               freqs = db8500_armss_freqs;
+               nfreqs = ARRAY_SIZE(db8500_armss_freqs);
+       }
+
        /* Find the corresponding arm opp from the cpufreq table. */
-       for (i = 0; i < ARRAY_SIZE(armss_freqs); i++) {
-               freq = armss_freqs[i];
+       for (i = 0; i < nfreqs; i++) {
+               freq = freqs[i];
                if (rate <= freq)
                        break;
        }
@@ -1853,11 +1873,21 @@ static int set_armss_rate(unsigned long rate)
 {
        unsigned long freq;
        u8 opps[] = { ARM_EXTCLK, ARM_50_OPP, ARM_100_OPP, ARM_MAX_OPP };
+       const unsigned long *freqs;
+       int nfreqs;
        int i;
 
+       if (fw_info.version.project == PRCMU_FW_PROJECT_U8520) {
+               freqs = db8520_armss_freqs;
+               nfreqs = ARRAY_SIZE(db8520_armss_freqs);
+       } else {
+               freqs = db8500_armss_freqs;
+               nfreqs = ARRAY_SIZE(db8500_armss_freqs);
+       }
+
        /* Find the corresponding arm opp from the cpufreq table. */
-       for (i = 0; i < ARRAY_SIZE(armss_freqs); i++) {
-               freq = armss_freqs[i];
+       for (i = 0; i < nfreqs; i++) {
+               freq = freqs[i];
                if (rate == freq)
                        break;
        }
@@ -3079,10 +3109,8 @@ static int db8500_prcmu_probe(struct platform_device *pdev)
        writel(ALL_MBOX_BITS, PRCM_ARM_IT1_CLR);
 
        irq = platform_get_irq(pdev, 0);
-       if (irq <= 0) {
-               dev_err(&pdev->dev, "no prcmu irq provided\n");
+       if (irq <= 0)
                return irq;
-       }
 
        err = request_threaded_irq(irq, prcmu_irq_handler,
                prcmu_irq_thread_fn, IRQF_NO_SUSPEND, "prcmu", NULL);