linux-kernel - [PATCH net-next v3] sungem: Prepare cleanup of powerpc's asm/prom.h

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Message-Id: <f7a7fab3ec5edf803d934fca04df22631c2b449d.1651662885.git.christophe.leroy@csgroup.eu>
Date:   Wed,  4 May 2022 13:16:09 +0200
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     Christophe Leroy <christophe.leroy@...roup.eu>,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH net-next v3] sungem: Prepare cleanup of powerpc's asm/prom.h

powerpc's <asm/prom.h> includes some headers that it doesn't
need itself.

In order to clean powerpc's <asm/prom.h> up in a further step,
first clean all files that include <asm/prom.h>

sungem_phy.c doesn't use any object provided by <asm/prom.h>.

But removing inclusion of <asm/prom.h> leads to the following
errors:

  CC      drivers/net/sungem_phy.o
drivers/net/sungem_phy.c: In function 'bcm5421_init':
drivers/net/sungem_phy.c:448:42: error: implicit declaration of function 'of_get_parent'; did you mean 'dget_parent'? [-Werror=implicit-function-declaration]
  448 |                 struct device_node *np = of_get_parent(phy->platform_data);
      |                                          ^~~~~~~~~~~~~
      |                                          dget_parent
drivers/net/sungem_phy.c:448:42: warning: initialization of 'struct device_node *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
drivers/net/sungem_phy.c:450:35: error: implicit declaration of function 'of_get_property' [-Werror=implicit-function-declaration]
  450 |                 if (np == NULL || of_get_property(np, "no-autolowpower", NULL))
      |                                   ^~~~~~~~~~~~~~~

Remove <asm/prom.h> from included headers but add <linux/of.h> to
handle the above.

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
v3: Make a more specific commit message

v2: More detailed commit description
---
 drivers/net/sungem_phy.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/net/sungem_phy.c b/drivers/net/sungem_phy.c
index 4daac5fda073..ff22b6b1c686 100644
--- a/drivers/net/sungem_phy.c
+++ b/drivers/net/sungem_phy.c
@@ -29,11 +29,7 @@
 #include <linux/mii.h>
 #include <linux/ethtool.h>
 #include <linux/delay.h>
-
-#ifdef CONFIG_PPC_PMAC
-#include <asm/prom.h>
-#endif
-
+#include <linux/of.h>
 #include <linux/sungem_phy.h>
 
 /* Link modes of the BCM5400 PHY */
-- 
2.35.1