Re: [PATCH v2 1/2] mmc: tmio: Add 64-bit read/write support for SD_BUF0 in polling mode

From: Wolfram Sang
Date: Wed Jul 30 2025 - 05:17:34 EST



> In file included from drivers/mmc/host/uniphier-sd.c:21:
> >> drivers/mmc/host/tmio_mmc.h:249:2: error: call to undeclared function 'ioread64_rep'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
> 249 | ioread64_rep(host->ctl + (addr << host->bus_shift), buf, count);
> | ^
> >> drivers/mmc/host/tmio_mmc.h:255:2: error: call to undeclared function 'iowrite64_rep'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
> 255 | iowrite64_rep(host->ctl + (addr << host->bus_shift), buf, count);
> | ^

Sigh, then the guard seems to be ARM64 after all :(

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