Ticket #2180: glamo_mci_send_request_time_detector.patch

drivers/mfd/glamo/glamo-mci.c

@@ -398 +398 @@
         host->mrq = NULL;
         mmc_request_done(host->mmc, cmd->mrq);
         spin_unlock_irqrestore(&host->complete_lock, iflags);
+
 }
 
 static void glamo_mci_irq(unsigned int irq, struct irq_desc *desc)
@@ -579 +580 @@
         return 0;
 }
 
+extern int iblock_limit;
+unsigned long s3c2410_gettimeoffset(void);
+
 static void glamo_mci_send_request(struct mmc_host *mmc)
 {
         struct glamo_mci_host *host = mmc_priv(mmc);
@@ -590 +594 @@
         int n;
         int timeout = 1000000;
         int insanity_timeout = 1000000;
+        unsigned long us;
 
         if (host->suspending) {
                 dev_err(&host->pdev->dev, "IGNORING glamo_mci_send_request while "
@@ -644 +649 @@
          * we must spin until response is ready or timed out
          * -- we don't get interrupts unless there is a bulk rx
          */
+
+        us = s3c2410_gettimeoffset();
+
         do
                 status = readw(host->base + GLAMO_REG_MMC_RB_STAT1);
         while (((((status >> 15) & 1) != (host->ccnt & 1)) ||
@@ -653 +661 @@
                              GLAMO_STAT1_MMC_BWERR |
                              GLAMO_STAT1_MMC_BRERR)))) && (insanity_timeout--));
 
+        us = s3c2410_gettimeoffset() - us;
+        if (iblock_limit && us > iblock_limit && us < 10000000)
+                printk(KERN_ERR "glamo_mci_send_request: %lu us - %d polls\n",
+                        us, 1000000 - insanity_timeout);
+
         if (insanity_timeout < 0)
                 dev_info(&host->pdev->dev, "command timeout, continuing\n");