diff mbox

[v4,1/3] i2c-mpc: use __devinit[data] for initialization functions and data

Message ID 1264685141-26391-2-git-send-email-wg@grandegger.com (mailing list archive)
State Superseded
Headers show

Commit Message

Wolfgang Grandegger Jan. 28, 2010, 1:25 p.m. UTC 
From: Wolfgang Grandegger <wg@denx.de>

"__devinit[data]" has not yet been used for all initialization functions
and data. To avoid truncating lines, the struct "mpc_i2c_match_data" has
been renamed to "mpc_i2c_data", which is even the better name.

Signed-off-by: Wolfgang Grandegger <wg@denx.de>
---
 drivers/i2c/busses/i2c-mpc.c |  103 +++++++++++++++++++----------------------
 1 files changed, 48 insertions(+), 55 deletions(-)

Comments

Wolfram Sang Jan. 29, 2010, 4:15 p.m. UTC | #1 
On Thu, Jan 28, 2010 at 02:25:39PM +0100, Wolfgang Grandegger wrote:
> From: Wolfgang Grandegger <wg@denx.de>
> 
> "__devinit[data]" has not yet been used for all initialization functions
> and data. To avoid truncating lines, the struct "mpc_i2c_match_data" has
> been renamed to "mpc_i2c_data", which is even the better name.
> 
> Signed-off-by: Wolfgang Grandegger <wg@denx.de>

Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Grant Likely Feb. 9, 2010, 5:41 p.m. UTC | #2 
On Thu, Jan 28, 2010 at 6:25 AM, Wolfgang Grandegger <wg@grandegger.com> wrote:
> From: Wolfgang Grandegger <wg@denx.de>
>
> "__devinit[data]" has not yet been used for all initialization functions
> and data. To avoid truncating lines, the struct "mpc_i2c_match_data" has
> been renamed to "mpc_i2c_data", which is even the better name.
>
> Signed-off-by: Wolfgang Grandegger <wg@denx.de>

Several comments below.

> ---
>  drivers/i2c/busses/i2c-mpc.c |  103 +++++++++++++++++++----------------------
>  1 files changed, 48 insertions(+), 55 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
> index f627001..275ebe6 100644
> --- a/drivers/i2c/busses/i2c-mpc.c
> +++ b/drivers/i2c/busses/i2c-mpc.c
> @@ -66,7 +66,7 @@ struct mpc_i2c_divider {
>        u16 fdr;        /* including dfsrr */
>  };
>
> -struct mpc_i2c_match_data {
> +struct mpc_i2c_data {
>        void (*setclock)(struct device_node *node,
>                         struct mpc_i2c *i2c,
>                         u32 clock, u32 prescaler);
> @@ -165,7 +165,7 @@ static int i2c_wait(struct mpc_i2c *i2c, unsigned timeout, int writing)
>  }
>
>  #ifdef CONFIG_PPC_MPC52xx
> -static const struct mpc_i2c_divider mpc_i2c_dividers_52xx[] = {
> +static const struct __devinitdata mpc_i2c_divider mpc_i2c_dividers_52xx[] = {

__devinitdata goes at the end, immediately before the '='.  Ditto
throughout the file.

>        {20, 0x20}, {22, 0x21}, {24, 0x22}, {26, 0x23},
>        {28, 0x24}, {30, 0x01}, {32, 0x25}, {34, 0x02},
>        {36, 0x26}, {40, 0x27}, {44, 0x04}, {48, 0x28},
> @@ -582,44 +584,35 @@ static int __devexit fsl_i2c_remove(struct of_device *op)
>        return 0;
>  };
>
> +static struct mpc_i2c_data __devinitdata mpc_i2c_data_52xx = {
> +       .setclock = mpc_i2c_setclock_52xx,
> +};
> +
> +static struct mpc_i2c_data __devinitdata mpc_i2c_data_8313 = {
> +       .setclock = mpc_i2c_setclock_8xxx,
> +};
> +
> +static struct mpc_i2c_data __devinitdata mpc_i2c_data_8543 = {
> +       .setclock = mpc_i2c_setclock_8xxx,
> +       .prescaler = 2,
> +};
> +
> +static struct mpc_i2c_data __devinitdata mpc_i2c_data_8544 = {
> +       .setclock = mpc_i2c_setclock_8xxx,
> +       .prescaler = 3,
> +};
> +
>  static const struct of_device_id mpc_i2c_of_match[] = {

You can make this __devinitdata too.

> -       {.compatible = "mpc5200-i2c",
> -        .data = &(struct mpc_i2c_match_data) {
> -                       .setclock = mpc_i2c_setclock_52xx,
> -               },
> -       },
> -       {.compatible = "fsl,mpc5200b-i2c",
> -        .data = &(struct mpc_i2c_match_data) {
> -                       .setclock = mpc_i2c_setclock_52xx,
> -               },
> -       },
> -       {.compatible = "fsl,mpc5200-i2c",
> -        .data = &(struct mpc_i2c_match_data) {
> -                       .setclock = mpc_i2c_setclock_52xx,
> -               },
> -       },
> -       {.compatible = "fsl,mpc8313-i2c",
> -        .data = &(struct mpc_i2c_match_data) {
> -                       .setclock = mpc_i2c_setclock_8xxx,
> -               },
> -       },
> -       {.compatible = "fsl,mpc8543-i2c",
> -        .data = &(struct mpc_i2c_match_data) {
> -                       .setclock = mpc_i2c_setclock_8xxx,
> -                       .prescaler = 2,
> -               },
> -       },
> -       {.compatible = "fsl,mpc8544-i2c",
> -        .data = &(struct mpc_i2c_match_data) {
> -                       .setclock = mpc_i2c_setclock_8xxx,
> -                       .prescaler = 3,
> -               },
> +       {.compatible = "mpc5200-i2c", .data = &mpc_i2c_data_52xx, },
> +       {.compatible = "fsl,mpc5200b-i2c", .data = &mpc_i2c_data_52xx, },
> +       {.compatible = "fsl,mpc5200-i2c", .data = &mpc_i2c_data_52xx, },
> +       {.compatible = "fsl,mpc8313-i2c", .data = &mpc_i2c_data_8313, },
> +       {.compatible = "fsl,mpc8543-i2c", .data = &mpc_i2c_data_8543, },
> +       {.compatible = "fsl,mpc8544-i2c", .data = &mpc_i2c_data_8544, },
>        /* Backward compatibility */
> -       },
>        {.compatible = "fsl-i2c", },
>        {},
>  };
> -
>  MODULE_DEVICE_TABLE(of, mpc_i2c_of_match);
>
>
> @@ -634,7 +627,7 @@ static struct of_platform_driver mpc_i2c_driver = {
>        },
>  };
>
> -static int __init fsl_i2c_init(void)
> +static int __devinit fsl_i2c_init(void)

No, __init was correct.  This is called as a module_init() not as a .probe hook.

>  {
>        int rv;
>
> @@ -645,7 +638,7 @@ static int __init fsl_i2c_init(void)
>        return rv;
>  }
>
> -static void __exit fsl_i2c_exit(void)
> +static void __devexit fsl_i2c_exit(void)

Same here for __exit.

>  {
>        of_unregister_platform_driver(&mpc_i2c_driver);
>  }
> --
> 1.6.2.5
>
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@lists.ozlabs.org
> https://lists.ozlabs.org/listinfo/linuxppc-dev
>
Wolfgang Grandegger Feb. 10, 2010, 10:09 a.m. UTC | #3 
Grant Likely wrote:
> On Thu, Jan 28, 2010 at 6:25 AM, Wolfgang Grandegger <wg@grandegger.com> wrote:
>> From: Wolfgang Grandegger <wg@denx.de>
>>
>> "__devinit[data]" has not yet been used for all initialization functions
>> and data. To avoid truncating lines, the struct "mpc_i2c_match_data" has
>> been renamed to "mpc_i2c_data", which is even the better name.
>>
>> Signed-off-by: Wolfgang Grandegger <wg@denx.de>
> 
> Several comments below.
> 
>> ---
>>  drivers/i2c/busses/i2c-mpc.c |  103 +++++++++++++++++++----------------------
>>  1 files changed, 48 insertions(+), 55 deletions(-)
>>
>> diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
>> index f627001..275ebe6 100644
>> --- a/drivers/i2c/busses/i2c-mpc.c
>> +++ b/drivers/i2c/busses/i2c-mpc.c
>> @@ -66,7 +66,7 @@ struct mpc_i2c_divider {
>>        u16 fdr;        /* including dfsrr */
>>  };
>>
>> -struct mpc_i2c_match_data {
>> +struct mpc_i2c_data {
>>        void (*setclock)(struct device_node *node,
>>                         struct mpc_i2c *i2c,
>>                         u32 clock, u32 prescaler);
>> @@ -165,7 +165,7 @@ static int i2c_wait(struct mpc_i2c *i2c, unsigned timeout, int writing)
>>  }
>>
>>  #ifdef CONFIG_PPC_MPC52xx
>> -static const struct mpc_i2c_divider mpc_i2c_dividers_52xx[] = {
>> +static const struct __devinitdata mpc_i2c_divider mpc_i2c_dividers_52xx[] = {
> 
> __devinitdata goes at the end, immediately before the '='.  Ditto
> throughout the file.

This made a difference and revealed section mismatches. "const" seems to
be incompatible with "__devinitdata".

>>        {20, 0x20}, {22, 0x21}, {24, 0x22}, {26, 0x23},
>>        {28, 0x24}, {30, 0x01}, {32, 0x25}, {34, 0x02},
>>        {36, 0x26}, {40, 0x27}, {44, 0x04}, {48, 0x28},
>> @@ -582,44 +584,35 @@ static int __devexit fsl_i2c_remove(struct of_device *op)
>>        return 0;
>>  };
>>
>> +static struct mpc_i2c_data __devinitdata mpc_i2c_data_52xx = {
>> +       .setclock = mpc_i2c_setclock_52xx,
>> +};
>> +
>> +static struct mpc_i2c_data __devinitdata mpc_i2c_data_8313 = {
>> +       .setclock = mpc_i2c_setclock_8xxx,
>> +};
>> +
>> +static struct mpc_i2c_data __devinitdata mpc_i2c_data_8543 = {
>> +       .setclock = mpc_i2c_setclock_8xxx,
>> +       .prescaler = 2,
>> +};
>> +
>> +static struct mpc_i2c_data __devinitdata mpc_i2c_data_8544 = {
>> +       .setclock = mpc_i2c_setclock_8xxx,
>> +       .prescaler = 3,
>> +};
>> +
>>  static const struct of_device_id mpc_i2c_of_match[] = {
> 
> You can make this __devinitdata too.

This results in a section mismatch as it's referenced by fsl_i2c_init().
I just sent out v6. Hope it's OK now.

Thanks,

Wolfgang.
Stephen Rothwell Feb. 10, 2010, 10:32 a.m. UTC | #4 
Hi Wolfgang,

On Wed, 10 Feb 2010 11:09:25 +0100 Wolfgang Grandegger <wg@grandegger.com> wrote:
>
> > __devinitdata goes at the end, immediately before the '='.  Ditto
> > throughout the file.
> 
> This made a difference and revealed section mismatches. "const" seems to
> be incompatible with "__devinitdata".

Maybe try no "const" and "__devinitconst" (I am not sure if both will
work).
Wolfgang Grandegger Feb. 10, 2010, 10:53 a.m. UTC | #5 
Stephen Rothwell wrote:
> Hi Wolfgang,
> 
> On Wed, 10 Feb 2010 11:09:25 +0100 Wolfgang Grandegger <wg@grandegger.com> wrote:
>>> __devinitdata goes at the end, immediately before the '='.  Ditto
>>> throughout the file.
>> This made a difference and revealed section mismatches. "const" seems to
>> be incompatible with "__devinitdata".
> 
> Maybe try no "const" and "__devinitconst" (I am not sure if both will
> work).

Yes, that works, even together with "const". To avoid rolling out the
whole patch series again, I can prepare a follow-up patch fixing this issue.

Wolfgang.
Grant Likely Feb. 10, 2010, 2:14 p.m. UTC | #6 
On Wed, Feb 10, 2010 at 3:53 AM, Wolfgang Grandegger <wg@grandegger.com> wrote:
> Stephen Rothwell wrote:
>> Hi Wolfgang,
>>
>> On Wed, 10 Feb 2010 11:09:25 +0100 Wolfgang Grandegger <wg@grandegger.com> wrote:
>>>> __devinitdata goes at the end, immediately before the '='.  Ditto
>>>> throughout the file.
>>> This made a difference and revealed section mismatches. "const" seems to
>>> be incompatible with "__devinitdata".
>>
>> Maybe try no "const" and "__devinitconst" (I am not sure if both will
>> work).
>
> Yes, that works, even together with "const". To avoid rolling out the
> whole patch series again, I can prepare a follow-up patch fixing this issue.

Nah, just resend this one patch.

g.
Wolfgang Grandegger Feb. 10, 2010, 2:45 p.m. UTC | #7 
Grant Likely wrote:
> On Wed, Feb 10, 2010 at 3:53 AM, Wolfgang Grandegger <wg@grandegger.com> wrote:
>> Stephen Rothwell wrote:
>>> Hi Wolfgang,
>>>
>>> On Wed, 10 Feb 2010 11:09:25 +0100 Wolfgang Grandegger <wg@grandegger.com> wrote:
>>>>> __devinitdata goes at the end, immediately before the '='.  Ditto
>>>>> throughout the file.
>>>> This made a difference and revealed section mismatches. "const" seems to
>>>> be incompatible with "__devinitdata".
>>> Maybe try no "const" and "__devinitconst" (I am not sure if both will
>>> work).
>> Yes, that works, even together with "const". To avoid rolling out the
>> whole patch series again, I can prepare a follow-up patch fixing this issue.
> 
> Nah, just resend this one patch.

Even if it break the following patches? Will resend v7 in a second.

Wolfgang.
diff mbox

Patch

diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
index f627001..275ebe6 100644
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c
@@ -66,7 +66,7 @@  struct mpc_i2c_divider {
 	u16 fdr;	/* including dfsrr */
 };
 
-struct mpc_i2c_match_data {
+struct mpc_i2c_data {
 	void (*setclock)(struct device_node *node,
 			 struct mpc_i2c *i2c,
 			 u32 clock, u32 prescaler);
@@ -165,7 +165,7 @@  static int i2c_wait(struct mpc_i2c *i2c, unsigned timeout, int writing)
 }
 
 #ifdef CONFIG_PPC_MPC52xx
-static const struct mpc_i2c_divider mpc_i2c_dividers_52xx[] = {
+static const struct __devinitdata mpc_i2c_divider mpc_i2c_dividers_52xx[] = {
 	{20, 0x20}, {22, 0x21}, {24, 0x22}, {26, 0x23},
 	{28, 0x24}, {30, 0x01}, {32, 0x25}, {34, 0x02},
 	{36, 0x26}, {40, 0x27}, {44, 0x04}, {48, 0x28},
@@ -186,7 +186,8 @@  static const struct mpc_i2c_divider mpc_i2c_dividers_52xx[] = {
 	{10240, 0x9d}, {12288, 0x9e}, {15360, 0x9f}
 };
 
-int mpc_i2c_get_fdr_52xx(struct device_node *node, u32 clock, int prescaler)
+static int __devinit mpc_i2c_get_fdr_52xx(struct device_node *node, u32 clock,
+					  int prescaler)
 {
 	const struct mpc_i2c_divider *div = NULL;
 	unsigned int pvr = mfspr(SPRN_PVR);
@@ -215,9 +216,9 @@  int mpc_i2c_get_fdr_52xx(struct device_node *node, u32 clock, int prescaler)
 	return div ? (int)div->fdr : -EINVAL;
 }
 
-static void mpc_i2c_setclock_52xx(struct device_node *node,
-				  struct mpc_i2c *i2c,
-				  u32 clock, u32 prescaler)
+static void __devinit mpc_i2c_setclock_52xx(struct device_node *node,
+					    struct mpc_i2c *i2c,
+					    u32 clock, u32 prescaler)
 {
 	int ret, fdr;
 
@@ -230,15 +231,15 @@  static void mpc_i2c_setclock_52xx(struct device_node *node,
 		dev_info(i2c->dev, "clock %d Hz (fdr=%d)\n", clock, fdr);
 }
 #else /* !CONFIG_PPC_MPC52xx */
-static void mpc_i2c_setclock_52xx(struct device_node *node,
-				  struct mpc_i2c *i2c,
-				  u32 clock, u32 prescaler)
+static void __devinit mpc_i2c_setclock_52xx(struct device_node *node,
+					    struct mpc_i2c *i2c,
+					    u32 clock, u32 prescaler)
 {
 }
 #endif /* CONFIG_PPC_MPC52xx*/
 
 #ifdef CONFIG_FSL_SOC
-static const struct mpc_i2c_divider mpc_i2c_dividers_8xxx[] = {
+static const struct __devinitdata mpc_i2c_divider mpc_i2c_dividers_8xxx[] = {
 	{160, 0x0120}, {192, 0x0121}, {224, 0x0122}, {256, 0x0123},
 	{288, 0x0100}, {320, 0x0101}, {352, 0x0601}, {384, 0x0102},
 	{416, 0x0602}, {448, 0x0126}, {480, 0x0103}, {512, 0x0127},
@@ -258,7 +259,7 @@  static const struct mpc_i2c_divider mpc_i2c_dividers_8xxx[] = {
 	{49152, 0x011e}, {61440, 0x011f}
 };
 
-u32 mpc_i2c_get_sec_cfg_8xxx(void)
+static u32 __devinit mpc_i2c_get_sec_cfg_8xxx(void)
 {
 	struct device_node *node = NULL;
 	u32 __iomem *reg;
@@ -287,7 +288,8 @@  u32 mpc_i2c_get_sec_cfg_8xxx(void)
 	return val;
 }
 
-int mpc_i2c_get_fdr_8xxx(struct device_node *node, u32 clock, u32 prescaler)
+static int __devinit mpc_i2c_get_fdr_8xxx(struct device_node *node, u32 clock,
+					  u32 prescaler)
 {
 	const struct mpc_i2c_divider *div = NULL;
 	u32 divider;
@@ -320,9 +322,9 @@  int mpc_i2c_get_fdr_8xxx(struct device_node *node, u32 clock, u32 prescaler)
 	return div ? (int)div->fdr : -EINVAL;
 }
 
-static void mpc_i2c_setclock_8xxx(struct device_node *node,
-				  struct mpc_i2c *i2c,
-				  u32 clock, u32 prescaler)
+static void __devinit mpc_i2c_setclock_8xxx(struct device_node *node,
+					    struct mpc_i2c *i2c,
+					    u32 clock, u32 prescaler)
 {
 	int ret, fdr;
 
@@ -338,9 +340,9 @@  static void mpc_i2c_setclock_8xxx(struct device_node *node,
 }
 
 #else /* !CONFIG_FSL_SOC */
-static void mpc_i2c_setclock_8xxx(struct device_node *node,
-				  struct mpc_i2c *i2c,
-				  u32 clock, u32 prescaler)
+static void __devinit mpc_i2c_setclock_8xxx(struct device_node *node,
+					    struct mpc_i2c *i2c,
+					    u32 clock, u32 prescaler)
 {
 }
 #endif /* CONFIG_FSL_SOC */
@@ -529,8 +531,8 @@  static int __devinit fsl_i2c_probe(struct of_device *op,
 			clock = *prop;
 
 		if (match->data) {
-			struct mpc_i2c_match_data *data =
-				(struct mpc_i2c_match_data *)match->data;
+			struct mpc_i2c_data *data =
+				(struct mpc_i2c_data *)match->data;
 			data->setclock(op->node, i2c, clock, data->prescaler);
 		} else {
 			/* Backwards compatibility */
@@ -582,44 +584,35 @@  static int __devexit fsl_i2c_remove(struct of_device *op)
 	return 0;
 };
 
+static struct mpc_i2c_data __devinitdata mpc_i2c_data_52xx = {
+	.setclock = mpc_i2c_setclock_52xx,
+};
+
+static struct mpc_i2c_data __devinitdata mpc_i2c_data_8313 = {
+	.setclock = mpc_i2c_setclock_8xxx,
+};
+
+static struct mpc_i2c_data __devinitdata mpc_i2c_data_8543 = {
+	.setclock = mpc_i2c_setclock_8xxx,
+	.prescaler = 2,
+};
+
+static struct mpc_i2c_data __devinitdata mpc_i2c_data_8544 = {
+	.setclock = mpc_i2c_setclock_8xxx,
+	.prescaler = 3,
+};
+
 static const struct of_device_id mpc_i2c_of_match[] = {
-	{.compatible = "mpc5200-i2c",
-	 .data = &(struct mpc_i2c_match_data) {
-			.setclock = mpc_i2c_setclock_52xx,
-		},
-	},
-	{.compatible = "fsl,mpc5200b-i2c",
-	 .data = &(struct mpc_i2c_match_data) {
-			.setclock = mpc_i2c_setclock_52xx,
-		},
-	},
-	{.compatible = "fsl,mpc5200-i2c",
-	 .data = &(struct mpc_i2c_match_data) {
-			.setclock = mpc_i2c_setclock_52xx,
-		},
-	},
-	{.compatible = "fsl,mpc8313-i2c",
-	 .data = &(struct mpc_i2c_match_data) {
-			.setclock = mpc_i2c_setclock_8xxx,
-		},
-	},
-	{.compatible = "fsl,mpc8543-i2c",
-	 .data = &(struct mpc_i2c_match_data) {
-			.setclock = mpc_i2c_setclock_8xxx,
-			.prescaler = 2,
-		},
-	},
-	{.compatible = "fsl,mpc8544-i2c",
-	 .data = &(struct mpc_i2c_match_data) {
-			.setclock = mpc_i2c_setclock_8xxx,
-			.prescaler = 3,
-		},
+	{.compatible = "mpc5200-i2c", .data = &mpc_i2c_data_52xx, },
+	{.compatible = "fsl,mpc5200b-i2c", .data = &mpc_i2c_data_52xx, },
+	{.compatible = "fsl,mpc5200-i2c", .data = &mpc_i2c_data_52xx, },
+	{.compatible = "fsl,mpc8313-i2c", .data = &mpc_i2c_data_8313, },
+	{.compatible = "fsl,mpc8543-i2c", .data = &mpc_i2c_data_8543, },
+	{.compatible = "fsl,mpc8544-i2c", .data = &mpc_i2c_data_8544, },
 	/* Backward compatibility */
-	},
 	{.compatible = "fsl-i2c", },
 	{},
 };
-
 MODULE_DEVICE_TABLE(of, mpc_i2c_of_match);
 
 
@@ -634,7 +627,7 @@  static struct of_platform_driver mpc_i2c_driver = {
 	},
 };
 
-static int __init fsl_i2c_init(void)
+static int __devinit fsl_i2c_init(void)
 {
 	int rv;
 
@@ -645,7 +638,7 @@  static int __init fsl_i2c_init(void)
 	return rv;
 }
 
-static void __exit fsl_i2c_exit(void)
+static void __devexit fsl_i2c_exit(void)
 {
 	of_unregister_platform_driver(&mpc_i2c_driver);
 }