diff options
| author | Stephen Rothwell | 2007-02-05 16:14:05 -0800 |
|---|---|---|
| committer | Paul Mackerras | 2007-02-08 15:29:22 +1100 |
| commit | 0524aad7b89671bc788d483b2c048ac7b79eefb9 (patch) | |
| tree | 584e3ac51afdc46e26dd9b0184e4679a0afd258c | |
| parent | f8b93a902315aeeedf51c45f01a407d5d8288c72 (diff) | |
[POWERPC] Fix ppc64's writing to struct file_operations
In preparation for marking file_operations as const.
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
| -rw-r--r-- | arch/powerpc/kernel/lparcfg.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c index 41c05dcd68f4..0de5a08cf9b0 100644 --- a/arch/powerpc/kernel/lparcfg.c +++ b/arch/powerpc/kernel/lparcfg.c @@ -439,6 +439,10 @@ static ssize_t lparcfg_write(struct file *file, const char __user * buf, ssize_t retval = -ENOMEM; + if (!firmware_has_feature(FW_FEATURE_SPLPAR) || + firmware_has_feature(FW_FEATURE_ISERIES)) + return -EINVAL; + kbuf = kmalloc(count, GFP_KERNEL); if (!kbuf) goto out; @@ -517,7 +521,7 @@ static int pseries_lparcfg_data(struct seq_file *m, void *v) static ssize_t lparcfg_write(struct file *file, const char __user * buf, size_t count, loff_t * off) { - return count; + return -EINVAL; } #endif /* CONFIG_PPC_PSERIES */ @@ -570,6 +574,7 @@ static int lparcfg_open(struct inode *inode, struct file *file) struct file_operations lparcfg_fops = { .owner = THIS_MODULE, .read = seq_read, + .write = lparcfg_write, .open = lparcfg_open, .release = single_release, }; @@ -581,10 +586,8 @@ int __init lparcfg_init(void) /* Allow writing if we have FW_FEATURE_SPLPAR */ if (firmware_has_feature(FW_FEATURE_SPLPAR) && - !firmware_has_feature(FW_FEATURE_ISERIES)) { - lparcfg_fops.write = lparcfg_write; + !firmware_has_feature(FW_FEATURE_ISERIES)) mode |= S_IWUSR; - } ent = create_proc_entry("ppc64/lparcfg", mode, NULL); if (ent) { |