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usb: musb: core: added missing const qualifier to musb_hdrc_platform_data::config

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The musb_hdrc_platform_data::config was defined as a non-const pointer.
However some drivers (e.g. the ux500) set up this pointer to point to a
static structure, which is potentially dangerous. Since the musb core
uses the pointer in a read-only manner the const qualifier was added to
protect the content of the config.

Signed-off-by: Petr Kulhavy <[email protected]>
Acked-by: Sergei Shtylyov <[email protected]>
Signed-off-by: Bin Liu <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
This commit is contained in:
Petr Kulhavy 2016-02-24 16:27:16 +01:00 • committed by Felipe Balbi
commit ead22caf85
3 changed files with 3 additions and 3 deletions
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2
drivers/usb/musb/musb_core.c
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@ -1901,7 +1901,7 @@ static void musb_recover_from_babble(struct musb *musb)
*/
static struct musb *allocate_instance(struct device *dev,
struct musb_hdrc_config *config, void __iomem *mbase)
const struct musb_hdrc_config *config, void __iomem *mbase)
{
struct musb *musb;
struct musb_hw_ep *ep;

2
drivers/usb/musb/musb_core.h
View file

@ -438,7 +438,7 @@ struct musb {
*/
unsigned double_buffer_not_ok:1;
struct musb_hdrc_config *config;
const struct musb_hdrc_config *config;
int xceiv_old_state;
#ifdef CONFIG_DEBUG_FS