-----Original Message-----
From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap-
owner@xxxxxxxxxxxxxxx] On Behalf Of Cousson, Benoit
Sent: Monday, August 23, 2010 5:20 PM
To: ABRAHAM, KISHON VIJAY
Cc: linux-omap@xxxxxxxxxxxxxxx; khilman@xxxxxxxxxxxxxxxxxxx;
paul@xxxxxxxxx
Subject: Re: [RFC: PATCH] Fix to support multiple HWMODS for a single
device
Hi Vijay,
On 8/23/2010 12:46 PM, ABRAHAM, KISHON VIJAY wrote:
The current HWMOD code expects multiple HWMODS to be filled in
consecutive
memory location before passing to omap_device_build_ss().
Just a minor comment: this is not the "The current HWMOD code" but the
omap_device core code.
Ignoring this
will result in incorrect HWMOD data being extracted. This means before
calling
omap_device_build_ss() the user has to create memory chunks, copy all
the HWMOD
structures to it taking care of the mutex.
I don't think it was an expectation, this is simply a bug :-)
So copying hwmod structures before calling this API is clearly not the
right way to do fix that...
This fix uses the pointer to pointer to OMAP_HWMOD structure passed to
omap_device_build_ss() to correctly extract the appropriate
OMAP_HWMOD structure.
Yes, this is the proper way of fixing that.
This patch is created on top of origin/pm-wip/hwmods-omap4.
You can do it on the mainline too, there is no dependency with lo/master
or pm-wip for that one. That fix will be able to go to mainline faster.
Signed-off-by: Kishon Vijay Abraham I<kishon@xxxxxx>
---
arch/arm/plat-omap/omap_device.c | 42 +++++++++++++++++++-----------
--------
1 files changed, 21 insertions(+), 21 deletions(-)
diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-
omap/omap_device.c
index d2b1609..e94bd7a 100644
--- a/arch/arm/plat-omap/omap_device.c
+++ b/arch/arm/plat-omap/omap_device.c
@@ -257,12 +257,12 @@ static inline struct omap_device
*_find_by_pdev(struct platform_device *pdev)
*/
int omap_device_count_resources(struct omap_device *od)
{
- struct omap_hwmod *oh;
+ struct omap_hwmod **oh;
int c = 0;
int i;
- for (i = 0, oh = *od->hwmods; i< od->hwmods_cnt; i++, oh++)
- c += omap_hwmod_count_resources(oh);
+ for (i = 0, oh = od->hwmods; i< od->hwmods_cnt; i++, oh++)
+ c += omap_hwmod_count_resources(*oh);
In that case, you might prefer using array type of access in order to
make the code more readable (i.e. oh[i]). Or even avoid the oh variable.
+ c += omap_hwmod_count_resources(od->hwmods[i]);
Just for my information, what kind of device are you working on that
require multiple hwmods?
