mmc: omap_hsmmc: fix module re-insertion
Balaji T K [Mon, 2 Apr 2012 06:56:47 +0000 (11:56 +0530)]
OMAP4 and OMAP3 HSMMC IP registers differ by 0x100 offset.
Adding the offset to platform_device resource structure
increments the start address for every insmod operation.
MMC command fails on re-insertion as module due to incorrect register
base.  Fix this by updating the ioremap base address only.

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

drivers/mmc/host/omap_hsmmc.c

index b4c59ea..5c2b1c1 100644 (file)
@@ -1818,8 +1818,6 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
        if (res == NULL || irq < 0)
                return -ENXIO;
 
-       res->start += pdata->reg_offset;
-       res->end += pdata->reg_offset;
        res = request_mem_region(res->start, resource_size(res), pdev->name);
        if (res == NULL)
                return -EBUSY;
@@ -1843,7 +1841,7 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
        host->dma_ch    = -1;
        host->irq       = irq;
        host->slot_id   = 0;
-       host->mapbase   = res->start;
+       host->mapbase   = res->start + pdata->reg_offset;
        host->base      = ioremap(host->mapbase, SZ_4K);
        host->power_mode = MMC_POWER_OFF;
        host->next_data.cookie = 1;