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Message-Id: <20130501120636.0e54681b2dfb7ebe6aeb27c4@canb.auug.org.au>
Date: Wed, 1 May 2013 12:06:36 +1000
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Al Viro <viro@...IV.linux.org.uk>
Cc: linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
David Howells <dhowells@...hat.com>,
Vasant Hegde <hegdevasant@...ux.vnet.ibm.com>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
<linuxppc-dev@...ts.ozlabs.org>
Subject: linux-next: manual merge of the vfs tree with the powerpc tree
Hi Al,
Today's linux-next merge of the vfs tree got a conflict in
arch/powerpc/kernel/rtas_flash.c between commit fb4696c39573
("powerpc/rtas_flash: Fix bad memory access") from the powerpc tree and
commits ad18a364f186 ("powerpc/rtas_flash: Free kmem upon module exit")
and 2352ad01409d ("ppc: Clean up rtas_flash driver somewhat") from the
vfs tree.
I fixed it up (see below) and can carry the fix as necessary (no action
is required).
--
Cheers,
Stephen Rothwell sfr@...b.auug.org.au
diff --cc arch/powerpc/kernel/rtas_flash.c
index 243e184,5b77026..0000000
--- a/arch/powerpc/kernel/rtas_flash.c
+++ b/arch/powerpc/kernel/rtas_flash.c
@@@ -310,9 -316,9 +328,9 @@@ static ssize_t rtas_flash_write(struct
* proc file
*/
if (uf->flist == NULL) {
- uf->flist = kmem_cache_alloc(flash_block_cache, GFP_KERNEL);
+ uf->flist = kmem_cache_zalloc(flash_block_cache, GFP_KERNEL);
if (!uf->flist)
- return -ENOMEM;
+ goto nomem;
}
fl = uf->flist;
@@@ -321,18 -327,18 +339,18 @@@
next_free = fl->num_blocks;
if (next_free == FLASH_BLOCKS_PER_NODE) {
/* Need to allocate another block_list */
- fl->next = kmem_cache_alloc(flash_block_cache, GFP_KERNEL);
+ fl->next = kmem_cache_zalloc(flash_block_cache, GFP_KERNEL);
if (!fl->next)
- return -ENOMEM;
+ goto nomem;
fl = fl->next;
next_free = 0;
}
if (count > RTAS_BLK_SIZE)
count = RTAS_BLK_SIZE;
- p = kmem_cache_alloc(flash_block_cache, GFP_KERNEL);
+ p = kmem_cache_zalloc(flash_block_cache, GFP_KERNEL);
if (!p)
- return -ENOMEM;
+ goto nomem;
if(copy_from_user(p, buffer, count)) {
kmem_cache_free(flash_block_cache, p);
@@@ -722,65 -694,13 +706,13 @@@ static int __init rtas_flash_init(void
return 1;
}
- firmware_flash_pde = create_flash_pde("powerpc/rtas/"
- FIRMWARE_FLASH_NAME,
- &rtas_flash_operations);
- if (firmware_flash_pde == NULL) {
- rc = -ENOMEM;
- goto cleanup;
- }
-
- rc = initialize_flash_pde_data("ibm,update-flash-64-and-reboot",
- sizeof(struct rtas_update_flash_t),
- firmware_flash_pde);
- if (rc != 0)
- goto cleanup;
-
- firmware_update_pde = create_flash_pde("powerpc/rtas/"
- FIRMWARE_UPDATE_NAME,
- &rtas_flash_operations);
- if (firmware_update_pde == NULL) {
- rc = -ENOMEM;
- goto cleanup;
- }
-
- rc = initialize_flash_pde_data("ibm,update-flash-64-and-reboot",
- sizeof(struct rtas_update_flash_t),
- firmware_update_pde);
- if (rc != 0)
- goto cleanup;
-
- validate_pde = create_flash_pde("powerpc/rtas/" VALIDATE_FLASH_NAME,
- &validate_flash_operations);
- if (validate_pde == NULL) {
- rc = -ENOMEM;
- goto cleanup;
- }
-
- rc = initialize_flash_pde_data("ibm,validate-flash-image",
- sizeof(struct rtas_validate_flash_t),
- validate_pde);
- if (rc != 0)
- goto cleanup;
-
- manage_pde = create_flash_pde("powerpc/rtas/" MANAGE_FLASH_NAME,
- &manage_flash_operations);
- if (manage_pde == NULL) {
- rc = -ENOMEM;
- goto cleanup;
- }
-
- rc = initialize_flash_pde_data("ibm,manage-flash-image",
- sizeof(struct rtas_manage_flash_t),
- manage_pde);
- if (rc != 0)
- goto cleanup;
-
- rtas_flash_term_hook = rtas_flash_firmware;
+ rtas_validate_flash_data.buf = kzalloc(VALIDATE_BUF_SIZE, GFP_KERNEL);
+ if (!rtas_validate_flash_data.buf)
+ return -ENOMEM;
flash_block_cache = kmem_cache_create("rtas_flash_cache",
- RTAS_BLK_SIZE, RTAS_BLK_SIZE, 0,
- rtas_block_ctor);
+ RTAS_BLK_SIZE, RTAS_BLK_SIZE, 0,
+ NULL);
if (!flash_block_cache) {
printk(KERN_ERR "%s: failed to create block cache\n",
__func__);
@@@ -800,20 -742,17 +754,22 @@@ enomem_buf
static void __exit rtas_flash_cleanup(void)
{
+ int i;
+
rtas_flash_term_hook = NULL;
+ if (rtas_firmware_flash_list) {
+ free_flash_list(rtas_firmware_flash_list);
+ rtas_firmware_flash_list = NULL;
+ }
+
- if (flash_block_cache)
- kmem_cache_destroy(flash_block_cache);
+ for (i = 0; i < ARRAY_SIZE(rtas_flash_files); i++) {
+ const struct rtas_flash_file *f = &rtas_flash_files[i];
+ remove_proc_entry(f->filename, NULL);
+ }
- remove_flash_pde(firmware_flash_pde);
- remove_flash_pde(firmware_update_pde);
- remove_flash_pde(validate_pde);
- remove_flash_pde(manage_pde);
+ kmem_cache_destroy(flash_block_cache);
+ kfree(rtas_validate_flash_data.buf);
}
module_init(rtas_flash_init);
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