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Merge "USB: diag: Add check for ctxt in usb_diag_request_size()"

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qctecmdr 2021-08-16 14:38:59 -07:00 • committed by Gerrit - the friendly Code Review server
commit 3de2783899
1 changed files with 11 additions and 0 deletions
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11
drivers/usb/gadget/function/f_diag.c
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@ -462,6 +462,7 @@ int usb_diag_alloc_req(struct usb_diag_ch *ch, int n_write, int n_read)
}
EXPORT_SYMBOL(usb_diag_alloc_req);
#define DWC3_MAX_REQUEST_SIZE (16 * 1024 * 1024)
#define CI_MAX_REQUEST_SIZE (16 * 1024)
/**
* usb_diag_request_size - Max request size for controller
* @ch: Channel handler
@ -471,6 +472,16 @@ EXPORT_SYMBOL(usb_diag_alloc_req);
*/
int usb_diag_request_size(struct usb_diag_ch *ch)
{
struct diag_context *ctxt = ch->priv_usb;
struct usb_composite_dev *cdev;
if (!ctxt)
return 0;
cdev = ctxt->cdev;
if (cdev->gadget->is_chipidea)
return CI_MAX_REQUEST_SIZE;
return DWC3_MAX_REQUEST_SIZE;
}
EXPORT_SYMBOL(usb_diag_request_size);