From 4ed1cc997f24c861df7a13d6309479b980d901b2 Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Tue, 27 Sep 2022 17:41:31 -0700 Subject: mei: add support to GSC extended header GSC extend header is of variable size and data is provided in a sgl list inside the header and not in the data buffers, need to enable the path. Signed-off-by: Tomas Winkler Signed-off-by: Daniele Ceraolo Spurio Cc: Vitaly Lubart Cc: Greg Kroah-Hartman Reviewed-by: Greg Kroah-Hartman Link: https://patchwork.freedesktop.org/patch/msgid/20220928004145.745803-2-daniele.ceraolospurio@intel.com --- drivers/misc/mei/hw-me.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers/misc/mei/hw-me.c') diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 9e2f781c6ed5..da4ef0b51954 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -590,9 +590,14 @@ static int mei_me_hbuf_write(struct mei_device *dev, u32 dw_cnt; int empty_slots; - if (WARN_ON(!hdr || !data || hdr_len & 0x3)) + if (WARN_ON(!hdr || hdr_len & 0x3)) return -EINVAL; + if (!data && data_len) { + dev_err(dev->dev, "wrong parameters null data with data_len = %zu\n", data_len); + return -EINVAL; + } + dev_dbg(dev->dev, MEI_HDR_FMT, MEI_HDR_PRM((struct mei_msg_hdr *)hdr)); empty_slots = mei_hbuf_empty_slots(dev); -- cgit v1.2.3