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Date: Mon, 26 Jan 2015 16:15:44 +0100
From: Ulf Hansson <ulf.hansson@...aro.org>
To: Addy Ke <addy.ke@...k-chips.com>
Cc: Rob Herring <robh+dt@...nel.org>,
Paweł Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Randy Dunlap <rdunlap@...radead.org>,
"tgih.jun@...sung.com" <tgih.jun@...sung.com>,
Jaehoon Chung <jh80.chung@...sung.com>,
Chris Ball <chris@...ntf.net>,
Dinh Nguyen <dinguyen@...era.com>,
Heiko Stübner <heiko@...ech.de>,
Olof Johansson <olof@...om.net>,
Doug Anderson <dianders@...omium.org>,
Sonny Rao <sonnyrao@...omium.org>,
Alexandru Stan <amstan@...omium.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
linux-mmc <linux-mmc@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
"zhenfu.fang" <zhenfu.fang@...k-chips.com>,
Eddie Cai <cf@...k-chips.com>, lintao <lintao@...k-chips.com>,
chenfen <chenfen@...k-chips.com>, zyf <zyf@...k-chips.com>,
Jianqun Xu <xjq@...k-chips.com>,
Tao Huang <huangtao@...k-chips.com>,
Chris Zhong <zyw@...k-chips.com>,
姚智情 <yzq@...k-chips.com>,
Han Jiang <hj@...k-chips.com>,
Kever Yang <kever.yang@...k-chips.com>,
zhangqing <zhangqing@...k-chips.com>,
Lin Huang <hl@...k-chips.com>
Subject: Re: [PATCH 1/2] mmc: core: use card pointer as the first parameter of execute_tuning()
On 26 January 2015 at 12:19, Addy Ke <addy.ke@...k-chips.com> wrote:
> We need to take the card pointer in execute_tuning() for mmc_send_status(),
mmc_send_status() is an mmc core function, not intended for host's to call.
> but mmc->card is NULL in tuning state. So we need change the first parameter
> of execute_tuning() to card pointer(struct mmc_card * card).
So, why do we need this?
Kind regards
Uffe
>
> Signed-off-by: Addy Ke <addy.ke@...k-chips.com>
> ---
> drivers/mmc/core/core.c | 2 +-
> drivers/mmc/host/dw_mmc.c | 3 ++-
> drivers/mmc/host/rtsx_pci_sdmmc.c | 3 ++-
> drivers/mmc/host/rtsx_usb_sdmmc.c | 3 ++-
> include/linux/mmc/host.h | 2 +-
> 5 files changed, 8 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
> index 1be7055..271f024 100644
> --- a/drivers/mmc/core/core.c
> +++ b/drivers/mmc/core/core.c
> @@ -1101,7 +1101,7 @@ int mmc_execute_tuning(struct mmc_card *card)
> opcode = MMC_SEND_TUNING_BLOCK;
>
> mmc_host_clk_hold(host);
> - err = host->ops->execute_tuning(host, opcode);
> + err = host->ops->execute_tuning(card, opcode);
> mmc_host_clk_release(host);
>
> if (err)
> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
> index 4bd22af..e54e656 100644
> --- a/drivers/mmc/host/dw_mmc.c
> +++ b/drivers/mmc/host/dw_mmc.c
> @@ -1485,8 +1485,9 @@ free_blk_test:
> return ret;
> }
>
> -static int dw_mci_execute_tuning(struct mmc_host *mmc, u32 opcode)
> +static int dw_mci_execute_tuning(struct mmc_card *card, u32 opcode)
> {
> + struct mmc_host *mmc = card->host;
> struct dw_mci_slot *slot = mmc_priv(mmc);
> struct dw_mci *host = slot->host;
> const struct dw_mci_drv_data *drv_data = host->drv_data;
> diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c
> index 1d3d6c4..230bd2f 100644
> --- a/drivers/mmc/host/rtsx_pci_sdmmc.c
> +++ b/drivers/mmc/host/rtsx_pci_sdmmc.c
> @@ -1270,8 +1270,9 @@ out:
> return err;
> }
>
> -static int sdmmc_execute_tuning(struct mmc_host *mmc, u32 opcode)
> +static int sdmmc_execute_tuning(struct mmc_card *card, u32 opcode)
> {
> + struct mmc_host *mmc = card->host;
> struct realtek_pci_sdmmc *host = mmc_priv(mmc);
> struct rtsx_pcr *pcr = host->pcr;
> int err = 0;
> diff --git a/drivers/mmc/host/rtsx_usb_sdmmc.c b/drivers/mmc/host/rtsx_usb_sdmmc.c
> index 88af827..c494c06 100644
> --- a/drivers/mmc/host/rtsx_usb_sdmmc.c
> +++ b/drivers/mmc/host/rtsx_usb_sdmmc.c
> @@ -1265,8 +1265,9 @@ out:
> return 0;
> }
>
> -static int sdmmc_execute_tuning(struct mmc_host *mmc, u32 opcode)
> +static int sdmmc_execute_tuning(struct mmc_card *card, u32 opcode)
> {
> + struct mmc_host *mmc = card->host;
> struct rtsx_usb_sdmmc *host = mmc_priv(mmc);
> struct rtsx_ucr *ucr = host->ucr;
> int err = 0;
> diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
> index 0c8cbe5..ec4128e 100644
> --- a/include/linux/mmc/host.h
> +++ b/include/linux/mmc/host.h
> @@ -133,7 +133,7 @@ struct mmc_host_ops {
> int (*card_busy)(struct mmc_host *host);
>
> /* The tuning command opcode value is different for SD and eMMC cards */
> - int (*execute_tuning)(struct mmc_host *host, u32 opcode);
> + int (*execute_tuning)(struct mmc_card *card, u32 opcode);
>
> /* Prepare HS400 target operating frequency depending host driver */
> int (*prepare_hs400_tuning)(struct mmc_host *host, struct mmc_ios *ios);
> --
> 1.8.3.2
>
>
> --
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