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staging: dwc2: Make dwc2_set_uninitialized more specific 

Before, it was a function that would set all members of a given struct
containing only int members to -1. Now, it is renamed to
dwc_set_all_params and it works only on the dwc2_core_params struct.
This makes sure that all of the slightly dubious casting and assumptions
happen inside the function instead of by the caller.

Signed-off-by: Matthijs Kooijman <matthijs@stdin.nl>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Matthijs Kooijman 2013-04-11 18:43:47 +02:00 committed by Greg Kroah-Hartman
parent 050232a73c
commit 8284f93b3d
3 changed files with 14 additions and 3 deletions
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4
drivers/staging/dwc2/core.h
View File

@ -162,6 +162,10 @@ enum dwc2_lx_state {
* parameters define how the DWC_otg controller should be configured.
*/
struct dwc2_core_params {
/*
* Don't add any non-int members here, this will break
* dwc2_set_all_params!
*/
int otg_cap;
int otg_ver;
int dma_enable;

12
drivers/staging/dwc2/hcd.c
View File

@ -2679,8 +2679,15 @@ static void dwc2_hcd_release(struct dwc2_hsotg *hsotg)
dwc2_hcd_free(hsotg);
}
static void dwc2_set_uninitialized(int *p, int size)
/*
* Sets all parameters to the given value.
*
* Assumes that the dwc2_core_params struct contains only integers.
*/
void dwc2_set_all_params(struct dwc2_core_params *params, int value)
{
int *p = (int *)params;
size_t size = sizeof(*params) / sizeof(*p);
int i;
for (i = 0; i < size; i++)
@ -2789,8 +2796,7 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq,
if (!hsotg->core_params)
goto error1;
dwc2_set_uninitialized((int *)hsotg->core_params,
sizeof(*hsotg->core_params) / sizeof(int));
dwc2_set_all_params(hsotg->core_params, -1);
/* Validate parameter values */
dwc2_set_parameters(hsotg, params);

1
drivers/staging/dwc2/hcd.h
View File

@ -452,6 +452,7 @@ extern int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq,
extern void dwc2_hcd_remove(struct dwc2_hsotg *hsotg);
extern int dwc2_set_parameters(struct dwc2_hsotg *hsotg,
struct dwc2_core_params *params);
extern void dwc2_set_all_params(struct dwc2_core_params *params, int value);
/* Transaction Execution Functions */
extern enum dwc2_transaction_type dwc2_hcd_select_transactions(