From 8e11b284eaa86863f700216e4d3c87e7d7b3f44c Mon Sep 17 00:00:00 2001 From: tcharding Date: Wed, 15 Mar 2017 19:48:04 +1100 Subject: [PATCH] mmc: core: simplify return code File contains multiple functions doing variations on the same thing, sdio_readb(), sdio_writeb()f, sdio_readw(), sdio_writew() etc. Although the functions have very similar logic the code is laid out in a variety of ways. This makes it overly complicated to read. There is a already a nice clean chunk of code, if we use this format for all instances then we will have cleaned up the code, reduced the line count and lessened the cognitive load required while reading. Less lines equals less bugs. Pick the most simple and clear code flow and change all functions to be the same. Signed-off-by: Tobin C. Harding Signed-off-by: Ulf Hansson --- drivers/mmc/core/sdio_io.c | 42 ++++++++++++-------------------------- 1 file changed, 13 insertions(+), 29 deletions(-) diff --git a/drivers/mmc/core/sdio_io.c b/drivers/mmc/core/sdio_io.c index 348231418565..d40744bbafa9 100644 --- a/drivers/mmc/core/sdio_io.c +++ b/drivers/mmc/core/sdio_io.c @@ -378,15 +378,11 @@ u8 sdio_readb(struct sdio_func *func, unsigned int addr, int *err_ret) return 0xFF; } - if (err_ret) - *err_ret = 0; - ret = mmc_io_rw_direct(func->card, 0, func->num, addr, 0, &val); - if (ret) { - if (err_ret) - *err_ret = ret; + if (err_ret) + *err_ret = ret; + if (ret) return 0xFF; - } return val; } @@ -443,7 +439,7 @@ u8 sdio_writeb_readb(struct sdio_func *func, u8 write_byte, if (err_ret) *err_ret = ret; if (ret) - val = 0xff; + return 0xff; return val; } @@ -531,15 +527,11 @@ u16 sdio_readw(struct sdio_func *func, unsigned int addr, int *err_ret) { int ret; - if (err_ret) - *err_ret = 0; - ret = sdio_memcpy_fromio(func, func->tmpbuf, addr, 2); - if (ret) { - if (err_ret) - *err_ret = ret; + if (err_ret) + *err_ret = ret; + if (ret) return 0xFFFF; - } return le16_to_cpup((__le16 *)func->tmpbuf); } @@ -583,15 +575,11 @@ u32 sdio_readl(struct sdio_func *func, unsigned int addr, int *err_ret) { int ret; - if (err_ret) - *err_ret = 0; - ret = sdio_memcpy_fromio(func, func->tmpbuf, addr, 4); - if (ret) { - if (err_ret) - *err_ret = ret; + if (err_ret) + *err_ret = ret; + if (ret) return 0xFFFFFFFF; - } return le32_to_cpup((__le32 *)func->tmpbuf); } @@ -642,15 +630,11 @@ unsigned char sdio_f0_readb(struct sdio_func *func, unsigned int addr, return 0xFF; } - if (err_ret) - *err_ret = 0; - ret = mmc_io_rw_direct(func->card, 0, 0, addr, 0, &val); - if (ret) { - if (err_ret) - *err_ret = ret; + if (err_ret) + *err_ret = ret; + if (ret) return 0xFF; - } return val; } -- 2.20.1