* [PATCH 03/11 V2] staging: dgnc: missing NULL check for ioremap in dgnc_do_remap()
@ 2016-09-23 1:26 ` Daeseok Youn
0 siblings, 0 replies; 3+ messages in thread
From: Daeseok Youn @ 2016-09-23 1:26 UTC (permalink / raw)
To: lidza.louina
Cc: markh, gregkh, driverdev-devel, devel, linux-kernel, kernel-janitors
The ioremap() function can be failed, so it need to have error
handling in dgnc_do_remap(). And also the return type of
dgnc_do_remap() should be changed from "void" to "int"
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
---
V2: the subject line was cut off, I put it completely.
drivers/staging/dgnc/dgnc_driver.c | 31 +++++++++++++++++++++----------
1 file changed, 21 insertions(+), 10 deletions(-)
diff --git a/drivers/staging/dgnc/dgnc_driver.c b/drivers/staging/dgnc/dgnc_driver.c
index c87b3de..58cebf4 100644
--- a/drivers/staging/dgnc/dgnc_driver.c
+++ b/drivers/staging/dgnc/dgnc_driver.c
@@ -43,7 +43,7 @@ static void dgnc_cleanup_board(struct dgnc_board *brd);
static void dgnc_poll_handler(ulong dummy);
static int dgnc_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent);
-static void dgnc_do_remap(struct dgnc_board *brd);
+static int dgnc_do_remap(struct dgnc_board *brd);
/*
* File operations permitted on Control/Management major.
@@ -431,7 +431,10 @@ static int dgnc_found_board(struct pci_dev *pdev, int id)
brd->bd_uart_offset = 0x8;
brd->bd_dividend = 921600;
- dgnc_do_remap(brd);
+ rc = dgnc_do_remap(brd);
+
+ if (rc < 0)
+ goto failed;
/* Get and store the board VPD, if it exists */
brd->bd_ops->vpd(brd);
@@ -483,15 +486,17 @@ static int dgnc_found_board(struct pci_dev *pdev, int id)
brd->bd_uart_offset = 0x200;
brd->bd_dividend = 921600;
- dgnc_do_remap(brd);
+ rc = dgnc_do_remap(brd);
- if (brd->re_map_membase) {
- /* Read and store the dvid after remapping */
- brd->dvid = readb(brd->re_map_membase + 0x8D);
+ if (rc < 0)
+ goto failed;
+
+ /* Read and store the dvid after remapping */
+ brd->dvid = readb(brd->re_map_membase + 0x8D);
+
+ /* Get and store the board VPD, if it exists */
+ brd->bd_ops->vpd(brd);
- /* Get and store the board VPD, if it exists */
- brd->bd_ops->vpd(brd);
- }
break;
default:
@@ -566,9 +571,15 @@ static int dgnc_finalize_board_init(struct dgnc_board *brd)
/*
* Remap PCI memory.
*/
-static void dgnc_do_remap(struct dgnc_board *brd)
+static int dgnc_do_remap(struct dgnc_board *brd)
{
+ int rc = 0;
+
brd->re_map_membase = ioremap(brd->membase, 0x1000);
+ if (!brd->re_map_membase)
+ rc = -ENOMEM;
+
+ return rc;
}
/*
--
1.9.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH 03/11 V2] staging: dgnc: missing NULL check for ioremap in dgnc_do_remap()
@ 2016-09-23 1:26 ` Daeseok Youn
0 siblings, 0 replies; 3+ messages in thread
From: Daeseok Youn @ 2016-09-23 1:26 UTC (permalink / raw)
To: lidza.louina
Cc: devel, gregkh, driverdev-devel, kernel-janitors, linux-kernel
The ioremap() function can be failed, so it need to have error
handling in dgnc_do_remap(). And also the return type of
dgnc_do_remap() should be changed from "void" to "int"
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
---
V2: the subject line was cut off, I put it completely.
drivers/staging/dgnc/dgnc_driver.c | 31 +++++++++++++++++++++----------
1 file changed, 21 insertions(+), 10 deletions(-)
diff --git a/drivers/staging/dgnc/dgnc_driver.c b/drivers/staging/dgnc/dgnc_driver.c
index c87b3de..58cebf4 100644
--- a/drivers/staging/dgnc/dgnc_driver.c
+++ b/drivers/staging/dgnc/dgnc_driver.c
@@ -43,7 +43,7 @@ static void dgnc_cleanup_board(struct dgnc_board *brd);
static void dgnc_poll_handler(ulong dummy);
static int dgnc_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent);
-static void dgnc_do_remap(struct dgnc_board *brd);
+static int dgnc_do_remap(struct dgnc_board *brd);
/*
* File operations permitted on Control/Management major.
@@ -431,7 +431,10 @@ static int dgnc_found_board(struct pci_dev *pdev, int id)
brd->bd_uart_offset = 0x8;
brd->bd_dividend = 921600;
- dgnc_do_remap(brd);
+ rc = dgnc_do_remap(brd);
+
+ if (rc < 0)
+ goto failed;
/* Get and store the board VPD, if it exists */
brd->bd_ops->vpd(brd);
@@ -483,15 +486,17 @@ static int dgnc_found_board(struct pci_dev *pdev, int id)
brd->bd_uart_offset = 0x200;
brd->bd_dividend = 921600;
- dgnc_do_remap(brd);
+ rc = dgnc_do_remap(brd);
- if (brd->re_map_membase) {
- /* Read and store the dvid after remapping */
- brd->dvid = readb(brd->re_map_membase + 0x8D);
+ if (rc < 0)
+ goto failed;
+
+ /* Read and store the dvid after remapping */
+ brd->dvid = readb(brd->re_map_membase + 0x8D);
+
+ /* Get and store the board VPD, if it exists */
+ brd->bd_ops->vpd(brd);
- /* Get and store the board VPD, if it exists */
- brd->bd_ops->vpd(brd);
- }
break;
default:
@@ -566,9 +571,15 @@ static int dgnc_finalize_board_init(struct dgnc_board *brd)
/*
* Remap PCI memory.
*/
-static void dgnc_do_remap(struct dgnc_board *brd)
+static int dgnc_do_remap(struct dgnc_board *brd)
{
+ int rc = 0;
+
brd->re_map_membase = ioremap(brd->membase, 0x1000);
+ if (!brd->re_map_membase)
+ rc = -ENOMEM;
+
+ return rc;
}
/*
--
1.9.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH 03/11 V2] staging: dgnc: missing NULL check for ioremap in dgnc_do_remap()
@ 2016-09-23 1:26 ` Daeseok Youn
0 siblings, 0 replies; 3+ messages in thread
From: Daeseok Youn @ 2016-09-23 1:26 UTC (permalink / raw)
To: lidza.louina
Cc: devel, gregkh, driverdev-devel, kernel-janitors, linux-kernel
The ioremap() function can be failed, so it need to have error
handling in dgnc_do_remap(). And also the return type of
dgnc_do_remap() should be changed from "void" to "int"
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
---
V2: the subject line was cut off, I put it completely.
drivers/staging/dgnc/dgnc_driver.c | 31 +++++++++++++++++++++----------
1 file changed, 21 insertions(+), 10 deletions(-)
diff --git a/drivers/staging/dgnc/dgnc_driver.c b/drivers/staging/dgnc/dgnc_driver.c
index c87b3de..58cebf4 100644
--- a/drivers/staging/dgnc/dgnc_driver.c
+++ b/drivers/staging/dgnc/dgnc_driver.c
@@ -43,7 +43,7 @@ static void dgnc_cleanup_board(struct dgnc_board *brd);
static void dgnc_poll_handler(ulong dummy);
static int dgnc_init_one(struct pci_dev *pdev,
const struct pci_device_id *ent);
-static void dgnc_do_remap(struct dgnc_board *brd);
+static int dgnc_do_remap(struct dgnc_board *brd);
/*
* File operations permitted on Control/Management major.
@@ -431,7 +431,10 @@ static int dgnc_found_board(struct pci_dev *pdev, int id)
brd->bd_uart_offset = 0x8;
brd->bd_dividend = 921600;
- dgnc_do_remap(brd);
+ rc = dgnc_do_remap(brd);
+
+ if (rc < 0)
+ goto failed;
/* Get and store the board VPD, if it exists */
brd->bd_ops->vpd(brd);
@@ -483,15 +486,17 @@ static int dgnc_found_board(struct pci_dev *pdev, int id)
brd->bd_uart_offset = 0x200;
brd->bd_dividend = 921600;
- dgnc_do_remap(brd);
+ rc = dgnc_do_remap(brd);
- if (brd->re_map_membase) {
- /* Read and store the dvid after remapping */
- brd->dvid = readb(brd->re_map_membase + 0x8D);
+ if (rc < 0)
+ goto failed;
+
+ /* Read and store the dvid after remapping */
+ brd->dvid = readb(brd->re_map_membase + 0x8D);
+
+ /* Get and store the board VPD, if it exists */
+ brd->bd_ops->vpd(brd);
- /* Get and store the board VPD, if it exists */
- brd->bd_ops->vpd(brd);
- }
break;
default:
@@ -566,9 +571,15 @@ static int dgnc_finalize_board_init(struct dgnc_board *brd)
/*
* Remap PCI memory.
*/
-static void dgnc_do_remap(struct dgnc_board *brd)
+static int dgnc_do_remap(struct dgnc_board *brd)
{
+ int rc = 0;
+
brd->re_map_membase = ioremap(brd->membase, 0x1000);
+ if (!brd->re_map_membase)
+ rc = -ENOMEM;
+
+ return rc;
}
/*
--
1.9.1
_______________________________________________
devel mailing list
devel@linuxdriverproject.org
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
^ permalink raw reply related [flat|nested] 3+ messages in thread
end of thread, other threads:[~2016-09-23 1:29 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-09-23 1:26 [PATCH 03/11 V2] staging: dgnc: missing NULL check for ioremap in dgnc_do_remap() Daeseok Youn
2016-09-23 1:26 ` Daeseok Youn
2016-09-23 1:26 ` Daeseok Youn
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.