[ethtool PATCH v4 05/11] marvell.c: fix strict alias warnings

[David Decotigny]

From: Maciej Żenczykowski <m...@google.com>

Addresses the following warnings:
  marvell.c:426:2: error: dereferencing type-punned pointer will break 
strict-aliasing rules [-Werror=strict-aliasing]
  marvell.c:427:2: error: dereferencing type-punned pointer will break 
strict-aliasing rules [-Werror=strict-aliasing]
  marvell.c:428:2: error: dereferencing type-punned pointer will break 
strict-aliasing rules [-Werror=strict-aliasing]

Note: code appears endian-dependent, not fixed by this commit.


Signed-off-by: Maciej Żenczykowski <m...@google.com>
Signed-off-by: David Decotigny <de...@googlers.com>
---
 marvell.c | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/marvell.c b/marvell.c
index e583c82..af21188 100644
--- a/marvell.c
+++ b/marvell.c
@@ -381,7 +381,8 @@ static void dump_prefetch(const char *name, const void *r)
 
 int sky2_dump_regs(struct ethtool_drvinfo *info, struct ethtool_regs *regs)
 {
-       const u32 *r = (const u32 *) regs->data;
+       const u16 *r16 = (const u16 *) regs->data;
+       const u32 *r32 = (const u32 *) regs->data;
        int dual;
 
        dump_pci(regs->data + 0x1c00);
@@ -390,15 +391,15 @@ int sky2_dump_regs(struct ethtool_drvinfo *info, struct 
ethtool_regs *regs)
 
        printf("\nBus Management Unit\n");
        printf("-------------------\n");
-       printf("CSR Receive Queue 1              0x%08X\n", r[24]);
-       printf("CSR Sync Queue 1                 0x%08X\n", r[26]);
-       printf("CSR Async Queue 1                0x%08X\n", r[27]);
+       printf("CSR Receive Queue 1              0x%08X\n", r32[24]);
+       printf("CSR Sync Queue 1                 0x%08X\n", r32[26]);
+       printf("CSR Async Queue 1                0x%08X\n", r32[27]);
 
        dual = (regs->data[0x11e] & 2) != 0;
        if (dual) {
-               printf("CSR Receive Queue 2              0x%08X\n", r[25]);
-               printf("CSR Async Queue 2                0x%08X\n", r[29]);
-               printf("CSR Sync Queue 2                 0x%08X\n", r[28]);
+               printf("CSR Receive Queue 2              0x%08X\n", r32[25]);
+               printf("CSR Async Queue 2                0x%08X\n", r32[29]);
+               printf("CSR Sync Queue 2                 0x%08X\n", r32[28]);
        }
 
        dump_mac(regs->data);
@@ -423,9 +424,9 @@ int sky2_dump_regs(struct ethtool_drvinfo *info, struct 
ethtool_regs *regs)
        dump_timer("TX status", regs->data + 0xec0);
        dump_timer("ISR", regs->data + 0xed0);
 
-       printf("\nGMAC control             0x%04X\n", *(u32 *)(regs->data + 
0xf00));
-       printf("GPHY control             0x%04X\n", *(u32 *)(regs->data + 
0xf04));
-       printf("LINK control             0x%02hX\n", *(u16 *)(regs->data + 
0xf10));
+       printf("\nGMAC control             0x%04X\n", r32[0xf00 >> 2]);
+       printf("GPHY control             0x%04X\n", r32[0xf04 >> 2]);
+       printf("LINK control             0x%02hX\n", r16[0xf10 >> 1]);
 
        dump_gmac("GMAC 1", regs->data + 0x2800);
        dump_gmac_fifo("Rx GMAC 1", regs->data + 0xc40);
-- 
2.7.0.rc3.207.g0ac5344