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pstore: clarify clearing of _read_cnt in ramoops_context

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*_read_cnt in ramoops_context need to be cleared during pstore ->open to
support mutli times getting the records.  The patch added missed
ftrace_read_cnt clearing and removed duplicate clearing in ramoops_probe.

Signed-off-by: Liu ShuoX <shuox.liu@intel.com>
Cc: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Cc: Colin Cross <ccross@android.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Change-Id: I98622b2587ed661884e74a7273cfc92ee99eaae3
Git-commit: 6a148888b00dbcb8e76c4ff33b062f6ca5f0cdd9
Git-repo: https://android.googlesource.com/kernel/common.git
Signed-off-by: Ian Maund <imaund@codeaurora.org>
This commit is contained in:
Liu ShuoX 2014-03-17 11:24:49 +11:00 committed by Ian Maund
parent b2556478f3
commit 95b3044153
1 changed files with 2 additions and 1 deletions
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3
fs/pstore/ram.c
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@ -86,6 +86,7 @@ struct ramoops_context {
struct persistent_ram_ecc_info ecc_info;
unsigned int max_dump_cnt;
unsigned int dump_write_cnt;
/* _read_cnt need clear on ramoops_pstore_open */
unsigned int dump_read_cnt;
unsigned int console_read_cnt;
unsigned int ftrace_read_cnt;
@ -101,6 +102,7 @@ static int ramoops_pstore_open(struct pstore_info *psi)
cxt->dump_read_cnt = 0;
cxt->console_read_cnt = 0;
cxt->ftrace_read_cnt = 0;
return 0;
}
@ -414,7 +416,6 @@ static int ramoops_probe(struct platform_device *pdev)
if (!is_power_of_2(pdata->ftrace_size))
pdata->ftrace_size = rounddown_pow_of_two(pdata->ftrace_size);
cxt->dump_read_cnt = 0;
cxt->size = pdata->mem_size;
cxt->phys_addr = pdata->mem_address;
cxt->record_size = pdata->record_size;