From: Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
To: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Cc: Mark Brown
<broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>,
Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
Subject: [PATCH 1/2] spi: spi-coldfire-qspi: Drop extra spi_master_put in device remove function
Date: Thu, 16 Aug 2012 20:25:59 -0700 [thread overview]
Message-ID: <1345173960-6138-1-git-send-email-linux@roeck-us.net> (raw)
The call sequence spi_alloc_master/spi_register_master/spi_unregister_master is
complete; it reduces the device reference count to zero, which and results in
device memory being freed. The subsequent call to spi_master_put is unnecessary
and results in an access to free memory. Drop it.
Signed-off-by: Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
---
drivers/spi/spi-coldfire-qspi.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/spi/spi-coldfire-qspi.c b/drivers/spi/spi-coldfire-qspi.c
index b2d4b9e..1a30b47 100644
--- a/drivers/spi/spi-coldfire-qspi.c
+++ b/drivers/spi/spi-coldfire-qspi.c
@@ -533,7 +533,6 @@ static int __devexit mcfqspi_remove(struct platform_device *pdev)
iounmap(mcfqspi->iobase);
release_mem_region(res->start, resource_size(res));
spi_unregister_master(master);
- spi_master_put(master);
return 0;
}
--
1.7.9.7
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next reply other threads:[~2012-08-17 3:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-17 3:25 Guenter Roeck [this message]
[not found] ` <1345173960-6138-1-git-send-email-linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
2012-08-17 3:26 ` [PATCH 2/2] spi/coldfire-qspi: Drop extra calls to spi_master_get in suspend/resume functions Guenter Roeck
2012-08-17 21:46 ` [PATCH 1/2] spi: spi-coldfire-qspi: Drop extra spi_master_put in device remove function Mark Brown
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