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| author |   Kunihiko Hayashi <hayashi.kunihiko@socionext.com> | 2021-09-01 14:09:17 +0900 |
|---|---|---|
| committer |   Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2021-09-30 12:04:03 +0100 |
| commit | a2258831d12d7845946f9c98f08d65aad9aa1121 (patch) | |
| tree | f7e4c1d6c346a594e1c3d9c9cc0bbd6069ffcb30 /drivers/pci/endpoint | |
| parent | Linux 5.15-rc2 (diff) | |
| download | linux-dev-a2258831d12d7845946f9c98f08d65aad9aa1121.tar.xz linux-dev-a2258831d12d7845946f9c98f08d65aad9aa1121.zip | |
PCI: endpoint: Use sysfs_emit() in "show" functions
Convert sprintf() in sysfs "show" functions to sysfs_emit() in order to
check for buffer overruns in sysfs outputs.
Link: https://lore.kernel.org/r/1630472957-26857-1-git-send-email-hayashi.kunihiko@socionext.com
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Krzysztof Wilczyński <kw@linux.com>
Diffstat (limited to 'drivers/pci/endpoint')
| -rw-r--r-- | drivers/pci/endpoint/functions/pci-epf-ntb.c | 4 | ||||
| -rw-r--r-- | drivers/pci/endpoint/pci-ep-cfs.c | 13 |
2 files changed, 8 insertions, 9 deletions
diff --git a/drivers/pci/endpoint/functions/pci-epf-ntb.c b/drivers/pci/endpoint/functions/pci-epf-ntb.c index 8b4756159f15..99266f05739a 100644 --- a/drivers/pci/endpoint/functions/pci-epf-ntb.c +++ b/drivers/pci/endpoint/functions/pci-epf-ntb.c @@ -1937,7 +1937,7 @@ static ssize_t epf_ntb_##_name##_show(struct config_item *item, \ struct config_group *group = to_config_group(item); \ struct epf_ntb *ntb = to_epf_ntb(group); \ \ - return sprintf(page, "%d\n", ntb->_name); \ + return sysfs_emit(page, "%d\n", ntb->_name); \ } #define EPF_NTB_W(_name) \ @@ -1968,7 +1968,7 @@ static ssize_t epf_ntb_##_name##_show(struct config_item *item, \ \ sscanf(#_name, "mw%d", &win_no); \ \ - return sprintf(page, "%lld\n", ntb->mws_size[win_no - 1]); \ + return sysfs_emit(page, "%lld\n", ntb->mws_size[win_no - 1]); \ } #define EPF_NTB_MW_W(_name) \ diff --git a/drivers/pci/endpoint/pci-ep-cfs.c b/drivers/pci/endpoint/pci-ep-cfs.c index 999911801877..5a0394a38675 100644 --- a/drivers/pci/endpoint/pci-ep-cfs.c +++ b/drivers/pci/endpoint/pci-ep-cfs.c @@ -198,8 +198,7 @@ static ssize_t pci_epc_start_store(struct config_item *item, const char *page, static ssize_t pci_epc_start_show(struct config_item *item, char *page) { - return sprintf(page, "%d\n", - to_pci_epc_group(item)->start); + return sysfs_emit(page, "%d\n", to_pci_epc_group(item)->start); } CONFIGFS_ATTR(pci_epc_, start); @@ -321,7 +320,7 @@ static ssize_t pci_epf_##_name##_show(struct config_item *item, char *page) \ struct pci_epf *epf = to_pci_epf_group(item)->epf; \ if (WARN_ON_ONCE(!epf->header)) \ return -EINVAL; \ - return sprintf(page, "0x%04x\n", epf->header->_name); \ + return sysfs_emit(page, "0x%04x\n", epf->header->_name); \ } #define PCI_EPF_HEADER_W_u32(_name) \ @@ -390,8 +389,8 @@ static ssize_t pci_epf_msi_interrupts_store(struct config_item *item, static ssize_t pci_epf_msi_interrupts_show(struct config_item *item, char *page) { - return sprintf(page, "%d\n", - to_pci_epf_group(item)->epf->msi_interrupts); + return sysfs_emit(page, "%d\n", + to_pci_epf_group(item)->epf->msi_interrupts); } static ssize_t pci_epf_msix_interrupts_store(struct config_item *item, @@ -412,8 +411,8 @@ static ssize_t pci_epf_msix_interrupts_store(struct config_item *item, static ssize_t pci_epf_msix_interrupts_show(struct config_item *item, char *page) { - return sprintf(page, "%d\n", - to_pci_epf_group(item)->epf->msix_interrupts); + return sysfs_emit(page, "%d\n", + to_pci_epf_group(item)->epf->msix_interrupts); } PCI_EPF_HEADER_R(vendorid) |