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Commit f179d9bf authored by ChandanaKishori Chiluveru's avatar ChandanaKishori Chiluveru
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USB: f_mass_storage: Increase the IN endpoint buffer allocation 



Some UDC may require allocation of some extra bytes for
TX buffer due to hardware requirement. Add necessary
changes for the same.

Change-Id: I503fe186f4e75e35c3ca7193805f28c62350dd25
Signed-off-by: default avatarSujeet Kumar <ksujeet@codeaurora.org>
Signed-off-by: default avatarChandanaKishori Chiluveru <cchilu@codeaurora.org>
parent a1189634

drivers/usb/gadget/function/f_mass_storage.c

+6 −1
Original line number Diff line number Diff line
@@ -2893,6 +2893,10 @@ int fsg_common_set_num_buffers(struct fsg_common *common, unsigned int n) 
{

	struct fsg_buffhd *bh, *buffhds;

	int i, rc;

	size_t extra_buf_alloc = 0;



	if (common->gadget)

		extra_buf_alloc = common->gadget->extra_buf_alloc;



	rc = fsg_num_buffers_validate(n);

	if (rc != 0)
@@ -2910,7 +2914,8 @@ int fsg_common_set_num_buffers(struct fsg_common *common, unsigned int n) 
		bh->next = bh + 1;

		++bh;

buffhds_first_it:

		bh->buf = kmalloc(FSG_BUFLEN, GFP_KERNEL);

		bh->buf = kmalloc(FSG_BUFLEN + extra_buf_alloc,

				GFP_KERNEL);

		if (unlikely(!bh->buf))

			goto error_release;

	} while (--i);