From: Marek Vasut Date: Tue, 28 Feb 2023 21:18:12 +0000 (+0100) Subject: mmc: tmio: Check 'addr' width before checking for 64bit limitation X-Git-Url: http://git.dujemihanovic.xyz/img/static/gitweb.css?a=commitdiff_plain;h=dd073c03933603907ad45428c227754d694168cf;p=u-boot.git mmc: tmio: Check 'addr' width before checking for 64bit limitation The 64bit limitation check is compiled and optimized out on 32bit platforms, but generates a type width warning: drivers/mmc/tmio-common.c: In function ‘tmio_sd_addr_is_dmaable’: drivers/mmc/tmio-common.c:376:26: warning: right shift count >= width of type [-Wshift-count-overflow] 376 | if (addr >> 32) | ^~ Fix the warning by checking the addr type width to see whether the shift even makes sense in the first place. The width check is also optimized out at compile time. Signed-off-by: Marek Vasut Reviewed-by: Jaehoon Chung --- diff --git a/drivers/mmc/tmio-common.c b/drivers/mmc/tmio-common.c index e9c7d3a2e0..0b24a5a7bd 100644 --- a/drivers/mmc/tmio-common.c +++ b/drivers/mmc/tmio-common.c @@ -373,7 +373,7 @@ static bool tmio_sd_addr_is_dmaable(struct mmc_data *data) if (!(data->flags & MMC_DATA_READ) && !IS_ALIGNED(addr, 128)) return false; /* Gen3 DMA has 32bit limit */ - if (addr >> 32) + if (sizeof(addr) > 4 && addr >> 32) return false; #endif