2018-12-05 16:11:50

by Nishad Kamdar

[permalink] [raw]
Subject: [PATCH] staging: mt7621-mmc: Remove missed lines of the #if 0 block in sd.c

The below patch
https://lore.kernel.org/patchwork/patch/995533/
does not completely remove an #if 0 block in sd.c.
This causes the function msdc_select_clksrc()
which was earler not compiled, to be compiled.
That causes an error - MSDC_CLKSRC_REG is not
defined.

This patch completely removes the #if 0 block

Signed-off-by: Nishad Kamdar <[email protected]>
---
drivers/staging/mt7621-mmc/sd.c | 20 --------------------
1 file changed, 20 deletions(-)

diff --git a/drivers/staging/mt7621-mmc/sd.c b/drivers/staging/mt7621-mmc/sd.c
index 7b66f9b0a094..3d918e481bd8 100644
--- a/drivers/staging/mt7621-mmc/sd.c
+++ b/drivers/staging/mt7621-mmc/sd.c
@@ -216,26 +216,6 @@ static void msdc_tasklet_card(struct work_struct *work)
spin_unlock(&host->lock);
}

-static void msdc_select_clksrc(struct msdc_host *host, unsigned char clksrc)
-{
- u32 val;
-
- BUG_ON(clksrc > 3);
-
- val = readl(host->base + MSDC_CLKSRC_REG);
- if (readl(host->base + MSDC_ECO_VER) >= 4) {
- val &= ~(0x3 << clk_src_bit[host->id]);
- val |= clksrc << clk_src_bit[host->id];
- } else {
- val &= ~0x3; val |= clksrc;
- }
- writel(val, host->base + MSDC_CLKSRC_REG);
-
- host->hclk = hclks[clksrc];
- host->hw->clk_src = clksrc;
-}
-#endif /* end of --- */
-
static void msdc_set_mclk(struct msdc_host *host, int ddr, unsigned int hz)
{
//struct msdc_hw *hw = host->hw;
--
2.17.1



2018-12-05 21:09:45

by NeilBrown

[permalink] [raw]
Subject: Re: [PATCH] staging: mt7621-mmc: Remove missed lines of the #if 0 block in sd.c

On Wed, Dec 05 2018, Nishad Kamdar wrote:

> The below patch
> https://lore.kernel.org/patchwork/patch/995533/
> does not completely remove an #if 0 block in sd.c.

Standard practice is to identify patches by their commit id.
In this case you could
git log --oneline drivers/staging/mt7621-mmc/sd.c

choose the right patch, and copy/paste with a bit of editing, so:

Commit 2a54e3259e2a ("staging: mt7621-mmc: Remove #if 0 blocks in
sd.c") does not completely ....

I have

[alias]
cm = !git --no-pager show -s --format=cm
fx = !git --no-pager show -s --format=fixes
[pretty]
fixes = Fixes: %h (\"%s\")
cm = Commit %h (\"%s\")

in my $HOME/.gitconfig so I can get the text with, e.g.,

$ git cm 2a54e3259e2a
Commit 2a54e3259e2a ("staging: mt7621-mmc: Remove #if 0 blocks in sd.c")

Then as that commit introduced a problem, it is best-practice to also do

$ git fx 2a54e3259e2a
Fixes: 2a54e3259e2a ("staging: mt7621-mmc: Remove #if 0 blocks in sd.c")

and add the "Fixes" near the Signed-off-by line.

Thanks,
NeilBrown


> This causes the function msdc_select_clksrc()
> which was earler not compiled, to be compiled.
> That causes an error - MSDC_CLKSRC_REG is not
> defined.
>
> This patch completely removes the #if 0 block
>
> Signed-off-by: Nishad Kamdar <[email protected]>
> ---
> drivers/staging/mt7621-mmc/sd.c | 20 --------------------
> 1 file changed, 20 deletions(-)
>
> diff --git a/drivers/staging/mt7621-mmc/sd.c b/drivers/staging/mt7621-mmc/sd.c
> index 7b66f9b0a094..3d918e481bd8 100644
> --- a/drivers/staging/mt7621-mmc/sd.c
> +++ b/drivers/staging/mt7621-mmc/sd.c
> @@ -216,26 +216,6 @@ static void msdc_tasklet_card(struct work_struct *work)
> spin_unlock(&host->lock);
> }
>
> -static void msdc_select_clksrc(struct msdc_host *host, unsigned char clksrc)
> -{
> - u32 val;
> -
> - BUG_ON(clksrc > 3);
> -
> - val = readl(host->base + MSDC_CLKSRC_REG);
> - if (readl(host->base + MSDC_ECO_VER) >= 4) {
> - val &= ~(0x3 << clk_src_bit[host->id]);
> - val |= clksrc << clk_src_bit[host->id];
> - } else {
> - val &= ~0x3; val |= clksrc;
> - }
> - writel(val, host->base + MSDC_CLKSRC_REG);
> -
> - host->hclk = hclks[clksrc];
> - host->hw->clk_src = clksrc;
> -}
> -#endif /* end of --- */
> -
> static void msdc_set_mclk(struct msdc_host *host, int ddr, unsigned int hz)
> {
> //struct msdc_hw *hw = host->hw;
> --
> 2.17.1


Attachments:
signature.asc (847.00 B)

2018-12-06 15:45:13

by Nishad Kamdar

[permalink] [raw]
Subject: Re: [PATCH] staging: mt7621-mmc: Remove missed lines of the #if 0 block in sd.c

On Thu, Dec 06, 2018 at 08:08:24AM +1100, NeilBrown wrote:
> On Wed, Dec 05 2018, Nishad Kamdar wrote:
>
> > The below patch
> > https://lore.kernel.org/patchwork/patch/995533/
> > does not completely remove an #if 0 block in sd.c.
>
> Standard practice is to identify patches by their commit id.
> In this case you could
> git log --oneline drivers/staging/mt7621-mmc/sd.c
>
> choose the right patch, and copy/paste with a bit of editing, so:
>
> Commit 2a54e3259e2a ("staging: mt7621-mmc: Remove #if 0 blocks in
> sd.c") does not completely ....
>
> I have
>
> [alias]
> cm = !git --no-pager show -s --format=cm
> fx = !git --no-pager show -s --format=fixes
> [pretty]
> fixes = Fixes: %h (\"%s\")
> cm = Commit %h (\"%s\")
>
> in my $HOME/.gitconfig so I can get the text with, e.g.,
>
> $ git cm 2a54e3259e2a
> Commit 2a54e3259e2a ("staging: mt7621-mmc: Remove #if 0 blocks in sd.c")
>
> Then as that commit introduced a problem, it is best-practice to also do
>
> $ git fx 2a54e3259e2a
> Fixes: 2a54e3259e2a ("staging: mt7621-mmc: Remove #if 0 blocks in sd.c")
>
> and add the "Fixes" near the Signed-off-by line.
>
> Thanks,
> NeilBrown
>
>
Ok. I'll do that and resubmit.

Thanks for the review and guidance.

Regards,
Nishad

> > This causes the function msdc_select_clksrc()
> > which was earler not compiled, to be compiled.
> > That causes an error - MSDC_CLKSRC_REG is not
> > defined.
> >
> > This patch completely removes the #if 0 block
> >
> > Signed-off-by: Nishad Kamdar <[email protected]>
> > ---
> > drivers/staging/mt7621-mmc/sd.c | 20 --------------------
> > 1 file changed, 20 deletions(-)
> >
> > diff --git a/drivers/staging/mt7621-mmc/sd.c b/drivers/staging/mt7621-mmc/sd.c
> > index 7b66f9b0a094..3d918e481bd8 100644
> > --- a/drivers/staging/mt7621-mmc/sd.c
> > +++ b/drivers/staging/mt7621-mmc/sd.c
> > @@ -216,26 +216,6 @@ static void msdc_tasklet_card(struct work_struct *work)
> > spin_unlock(&host->lock);
> > }
> >
> > -static void msdc_select_clksrc(struct msdc_host *host, unsigned char clksrc)
> > -{
> > - u32 val;
> > -
> > - BUG_ON(clksrc > 3);
> > -
> > - val = readl(host->base + MSDC_CLKSRC_REG);
> > - if (readl(host->base + MSDC_ECO_VER) >= 4) {
> > - val &= ~(0x3 << clk_src_bit[host->id]);
> > - val |= clksrc << clk_src_bit[host->id];
> > - } else {
> > - val &= ~0x3; val |= clksrc;
> > - }
> > - writel(val, host->base + MSDC_CLKSRC_REG);
> > -
> > - host->hclk = hclks[clksrc];
> > - host->hw->clk_src = clksrc;
> > -}
> > -#endif /* end of --- */
> > -
> > static void msdc_set_mclk(struct msdc_host *host, int ddr, unsigned int hz)
> > {
> > //struct msdc_hw *hw = host->hw;
> > --
> > 2.17.1