linux-kernel - [PATCH v2 3/8] MIPS: MT: Remove "weak" from vpe

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Message-ID: <20150714164638.1541.68971.stgit@bhelgaas-glaptop2.roam.corp.google.com>
Date:	Tue, 14 Jul 2015 11:46:38 -0500
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Ralf Baechle <ralf@...ux-mips.org>
Cc:	Andrew Bresticker <abrestic@...omium.org>,
	linux-mips@...ux-mips.org, James Hogan <james.hogan@...tec.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 3/8] MIPS: MT: Remove "weak" from vpe_run() declaration

Weak header file declarations are error-prone because they make every
definition weak, and the linker chooses one based on link order (see
10629d711ed7 ("PCI: Remove __weak annotation from pcibios_get_phb_of_node
decl")).

That's not a problem for vpe_run() because Kconfig ensures there's exactly
one definition if we build vpe.o:

  - vpe_run() is defined in arch/mips/kernel/vpe-mt.c if
    CONFIG_MIPS_VPE_LOADER_MT=y

  - vpe_run() is defined in arch/mips/mti-malta/malta-amon.c if
    CONFIG_MIPS_VPE_LOADER_CMP=y

  - CONFIG_MIPS_VPE_LOADER_MT and CONFIG_MIPS_VPE_LOADER_CMP cannot both be
    set (MIPS_VPE_LOADER_CMP depends on MIPS_VPE_LOADER && MIPS_CMP;
    MIPS_VPE_LOADER_MT depends on MIPS_VPE_LOADER && !MIPS_CMP)

Remove "weak" from the vpe_run() declaration and don't test whether
vpe_run() is defined.

Simplification-by: James Hogan <james.hogan@...tec.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
---
 arch/mips/include/asm/vpe.h |    2 +-
 arch/mips/kernel/vpe.c      |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/mips/include/asm/vpe.h b/arch/mips/include/asm/vpe.h
index 7849f39..80e70db 100644
--- a/arch/mips/include/asm/vpe.h
+++ b/arch/mips/include/asm/vpe.h
@@ -122,7 +122,7 @@ void release_vpe(struct vpe *v);
 void *alloc_progmem(unsigned long len);
 void release_progmem(void *ptr);
 
-int __weak vpe_run(struct vpe *v);
+int vpe_run(struct vpe *v);
 void cleanup_tc(struct tc *tc);
 
 int __init vpe_module_init(void);
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 11da314..1fd05b5 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -827,7 +827,7 @@ static int vpe_release(struct inode *inode, struct file *filp)
 
 	hdr = (Elf_Ehdr *) v->pbuffer;
 	if (memcmp(hdr->e_ident, ELFMAG, SELFMAG) == 0) {
-		if ((vpe_elfload(v) >= 0) && vpe_run) {
+		if (vpe_elfload(v) >= 0) {
 			vpe_run(v);
 		} else {
 			pr_warn("VPE loader: ELF load failed.\n");

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