ARM: 6910/1: MTD: physmap: let set_vpp() pass a platform_device instead of a map_info

The set_vpp() method provided by physmap passes a map_info back to
the platform code, which has little relevance as far as the platform
is concerned (this parameter is completely unused).

Instead, pass the platform_device, which can be used in the pismo
driver to retrieve some important information in a nicer way, instead
of the hack that was in place.

The empty set_vpp function in board-at572d940hf_ek.c is left untouched,
as the board/SoC is scheduled for removal.

Cc: Andrew Victor <linux@maxim.org.za>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Acked-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Acked-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 3 insertions, 37 deletions

diff --git a/drivers/mtd/maps/pismo.c b/drivers/mtd/maps/pismo.c
index f4ce273e93fd..65bd1cd4d627 100644
--- a/drivers/mtd/maps/pismo.c
+++ b/drivers/mtd/maps/pismo.c
@@ -50,39 +50,13 @@ struct pismo_data {
         struct platform_device  *dev[PISMO_NUM_CS];
 };
 
-/* FIXME: set_vpp could do with a better calling convention */
-static struct pismo_data *vpp_pismo;
-static DEFINE_MUTEX(pismo_mutex);
-
-static int pismo_setvpp_probe_fix(struct pismo_data *pismo)
+static void pismo_set_vpp(struct platform_device *pdev, int on)
 {
-        mutex_lock(&pismo_mutex);
-        if (vpp_pismo) {
-                mutex_unlock(&pismo_mutex);
-                kfree(pismo);
-                return -EBUSY;
-        }
-        vpp_pismo = pismo;
-        mutex_unlock(&pismo_mutex);
-        return 0;
-}
-
-static void pismo_setvpp_remove_fix(struct pismo_data *pismo)
-{
-        mutex_lock(&pismo_mutex);
-        if (vpp_pismo == pismo)
-                vpp_pismo = NULL;
-        mutex_unlock(&pismo_mutex);
-}
-
-static void pismo_set_vpp(struct map_info *map, int on)
-{
-        struct pismo_data *pismo = vpp_pismo;
+        struct i2c_client *client = to_i2c_client(pdev->dev.parent);
+        struct pismo_data *pismo = i2c_get_clientdata(client);
 
         pismo->vpp(pismo->vpp_data, on);
 }
-/* end of hack */
-
 
 static unsigned int __devinit pismo_width_to_bytes(unsigned int width)
 {
@@ -231,9 +205,6 @@ static int __devexit pismo_remove(struct i2c_client *client)
         for (i = 0; i < ARRAY_SIZE(pismo->dev); i++)
                 platform_device_unregister(pismo->dev[i]);
 
-        /* FIXME: set_vpp needs saner arguments */
-        pismo_setvpp_remove_fix(pismo);
-
         kfree(pismo);
 
         return 0;
@@ -257,11 +228,6 @@ static int __devinit pismo_probe(struct i2c_client *client,
         if (!pismo)
                 return -ENOMEM;
 
-        /* FIXME: set_vpp needs saner arguments */
-        ret = pismo_setvpp_probe_fix(pismo);
-        if (ret)
-                return ret;
-
         pismo->client = client;
         if (pdata) {
                 pismo->vpp = pdata->set_vpp;