From: Ben Hutchings Date: Mon, 6 Dec 2010 22:58:41 +0000 (+0000) Subject: sfc: Remove locking from implementation of efx_writeo_paged() X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e506147271229d6c53b42c6a9897db67b5cfdb6d;p=linux-beck.git sfc: Remove locking from implementation of efx_writeo_paged() It is not necessary to serialise writes to the paged 128-bit registers. However, if we don't then we must always write the last dword separately, not as part of a qword write. Signed-off-by: Ben Hutchings --- diff --git a/drivers/net/sfc/io.h b/drivers/net/sfc/io.h index 7f3adf29d6f6..6da4ae20a039 100644 --- a/drivers/net/sfc/io.h +++ b/drivers/net/sfc/io.h @@ -229,7 +229,20 @@ static inline void efx_readd_table(struct efx_nic *efx, efx_dword_t *value, static inline void _efx_writeo_page(struct efx_nic *efx, efx_oword_t *value, unsigned int reg, unsigned int page) { - efx_writeo(efx, value, EFX_PAGED_REG(page, reg)); + reg = EFX_PAGED_REG(page, reg); + + netif_vdbg(efx, hw, efx->net_dev, + "writing register %x with " EFX_OWORD_FMT "\n", reg, + EFX_OWORD_VAL(*value)); + +#ifdef EFX_USE_QWORD_IO + _efx_writeq(efx, value->u64[0], reg + 0); +#else + _efx_writed(efx, value->u32[0], reg + 0); + _efx_writed(efx, value->u32[1], reg + 4); +#endif + _efx_writed(efx, value->u32[2], reg + 8); + _efx_writed(efx, value->u32[3], reg + 12); } #define efx_writeo_page(efx, value, reg, page) \ _efx_writeo_page(efx, value, \