The result is actually read into fotg210->caps->hcc_params. No need to popuate an unused varible with the unchecked return value from fotg210_readl().
Fixes the following W=1 kernel build warning(s): drivers/usb/host/fotg210-hcd.c: In function ‘fotg210_run’: drivers/usb/host/fotg210-hcd.c:5013:6: warning: variable ‘hcc_params’ set but not used [-Wunused-but-set-variable] 5013 | u32 hcc_params; | ^~~~~~~~~~ Cc: Yuan-Hsin Chen <yhc...@faraday-tech.com> Cc: Feng-Hsin Chiang <john...@faraday-tech.com> Cc: Po-Yu Chuang <ratbert.chu...@gmail.com> Signed-off-by: Lee Jones <lee.jo...@linaro.org> --- drivers/usb/host/fotg210-hcd.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c index f967adf2d8dfc..51dbbb0e768bc 100644 --- a/drivers/usb/host/fotg210-hcd.c +++ b/drivers/usb/host/fotg210-hcd.c @@ -5010,7 +5010,6 @@ static int fotg210_run(struct usb_hcd *hcd) { struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd); u32 temp; - u32 hcc_params; hcd->uses_new_polling = 1; @@ -5033,7 +5032,7 @@ static int fotg210_run(struct usb_hcd *hcd) * Scsi_Host.highmem_io, and so forth. It's readonly to all * host side drivers though. */ - hcc_params = fotg210_readl(fotg210, &fotg210->caps->hcc_params); + fotg210_readl(fotg210, &fotg210->caps->hcc_params); /* * Philips, Intel, and maybe others need CMD_RUN before the -- 2.25.1