Re: [PATCH v2] gpu: host1x: Fix compiler errors by converting to dma_addr_t

[Thierry Reding]

On Wed, May 16, 2018 at 12:22:04PM +0200, Emil Goode wrote:
> The compiler is complaining with the following errors:
> 
> drivers/gpu/host1x/cdma.c:94:48: error:
>   passing argument 3 of ‘dma_alloc_wc’ from incompatible pointer type
>   [-Werror=incompatible-pointer-types]
> 
> drivers/gpu/host1x/cdma.c:113:48: error:
>   passing argument 3 of ‘dma_alloc_wc’ from incompatible pointer type
>   [-Werror=incompatible-pointer-types]
> 
> The expected pointer type of the third argument to dma_alloc_wc() is
> dma_addr_t but phys_addr_t is passed.
> 
> Change the phys member of struct push_buffer to be dma_addr_t so that we
> pass the correct type to dma_alloc_wc().
> Also check pb->mapped for non-NULL in the destroy function as that is the
> right way of checking if dma_alloc_wc() was successful.
> 
> Signed-off-by: Emil Goode 
> ---
> v2: - Change the phys member type instead of adding casts.
> - Check pb->mapped in the destroy function as 0 is a valid value
>   for dma_addr_t.
> 
>  drivers/gpu/host1x/cdma.c | 2 +-
>  drivers/gpu/host1x/cdma.h | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)

Applied, thanks.

Thierry


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[PATCH v2] gpu: host1x: Fix compiler errors by converting to dma_addr_t

[Emil Goode]

The compiler is complaining with the following errors:

drivers/gpu/host1x/cdma.c:94:48: error:
passing argument 3 of ‘dma_alloc_wc’ from incompatible pointer type
[-Werror=incompatible-pointer-types]

drivers/gpu/host1x/cdma.c:113:48: error:
passing argument 3 of ‘dma_alloc_wc’ from incompatible pointer type
[-Werror=incompatible-pointer-types]

The expected pointer type of the third argument to dma_alloc_wc() is
dma_addr_t but phys_addr_t is passed.

Change the phys member of struct push_buffer to be dma_addr_t so that we
pass the correct type to dma_alloc_wc().
Also check pb->mapped for non-NULL in the destroy function as that is the
right way of checking if dma_alloc_wc() was successful.

Signed-off-by: Emil Goode 
---
v2: - Change the phys member type instead of adding casts.
- Check pb->mapped in the destroy function as 0 is a valid value
  for dma_addr_t.

 drivers/gpu/host1x/cdma.c | 2 +-
 drivers/gpu/host1x/cdma.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/host1x/cdma.c b/drivers/gpu/host1x/cdma.c
index 28541b280739..02a0b61be18f 100644
--- a/drivers/gpu/host1x/cdma.c
+++ b/drivers/gpu/host1x/cdma.c
@@ -51,7 +51,7 @@ static void host1x_pushbuffer_destroy(struct push_buffer *pb)
struct host1x_cdma *cdma = pb_to_cdma(pb);
struct host1x *host1x = cdma_to_host1x(cdma);
 
-   if (!pb->phys)
+   if (!pb->mapped)
return;
 
if (host1x->domain) {
diff --git a/drivers/gpu/host1x/cdma.h b/drivers/gpu/host1x/cdma.h
index 286d49386be9..446ee1a84969 100644
--- a/drivers/gpu/host1x/cdma.h
+++ b/drivers/gpu/host1x/cdma.h
@@ -44,7 +44,7 @@ struct host1x_job;
 struct push_buffer {
void *mapped;   /* mapped pushbuffer memory */
dma_addr_t dma; /* device address of pushbuffer */
-   phys_addr_t phys;   /* physical address of pushbuffer */
+   dma_addr_t phys;/* physical address of pushbuffer */
u32 fence;  /* index we've written */
u32 pos;/* index to write to */
u32 size;
-- 
2.11.0

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