[PATCH v4] usb: dwc3: remove unused sg struct member

[Luis Felipe Hernandez <luis.hernandez093@gmail.com>]

The sg (scatter-gather list pointer) member of the dwc3_request struct
is no longer used and should be removed. This patch eliminates the unused
member, cleaning up the struct.

This change improves code clarity and avoids maintaining unnecessary 
members in the structure.

Reviewed-by: Ricardo B. Marliere <rbm@suse.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Closes: https://lore.kernel.org/all/20241118194006.77c7b126@canb.auug.org.au/
Signed-off-by: Luis Felipe Hernandez <luis.hernandez093@gmail.com>
---
v2: remove unused sg struct member as per review[1]
v3: 
  - Add reported-by tag as per review [2]
  - Carry over reviewed-by tag from v2 [3]
  - Update commit subject to reflect maintainers
  - Update commit message to reflect actual change gathered from 
    Thinh Nguyen's feedback

[1] https://lore.kernel.org/all/20241119020807.cn7ugxnhbkqwrr2b@synopsys.com/
[2] https://lore.kernel.org/all/2024111922-pantyhose-panorama-6f16@gregkh/
[3] https://lore.kernel.org/all/5l65sdskdzbehxamff5ax4ptiqhaxh7ewi4umtpp6ynen45nj6@nebuxjg4c4rx/
v4:
  - Remove out of context paragraph from commit message as per 
    Thinh Nguyen's[1]
  - Fix Reported-by, correctly attribute report to Stephen Rothwell

[1] https://lore.kernel.org/all/20241119221907.tyt4luboduaymukl@synopsys.com/
---
 drivers/usb/dwc3/core.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index ee73789326bc..3be069c4520e 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -956,7 +956,6 @@ struct dwc3_request {
 	struct usb_request	request;
 	struct list_head	list;
 	struct dwc3_ep		*dep;
-	struct scatterlist	*sg;
 	struct scatterlist	*start_sg;
 
 	unsigned int		num_pending_sgs;
-- 
2.47.0