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i2c: ismt: Use minimum descriptor size

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Software is allowed to allocate number of descriptor size from 2 to 256,
this i2c controller could process more descriptor, but for i2c core soft
ware layer, only one i2c transaction is allowed each time.

So here switch to minimum 2 descriptor when initialization.

Signed-off-by: Fan Du <fan.du@intel.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Fan Du 2014-09-16 17:21:03 +08:00 committed by Wolfram Sang
parent 639a26cf07
commit 8b57cebedd
1 changed files with 1 additions and 1 deletions
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2
drivers/i2c/busses/i2c-ismt.c
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@ -81,7 +81,7 @@
#define PCI_DEVICE_ID_INTEL_S1200_SMT1 0x0c5a
#define PCI_DEVICE_ID_INTEL_AVOTON_SMT 0x1f15
#define ISMT_DESC_ENTRIES 32 /* number of descriptor entries */
#define ISMT_DESC_ENTRIES 2 /* number of descriptor entries */
#define ISMT_MAX_RETRIES 3 /* number of SMBus retries to attempt */
/* Hardware Descriptor Constants - Control Field */