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| author | 黃清隆 <ching2048@areca.com.tw> | 2023-04-01 05:43:43 +0000 |
|---|---|---|
| committer | Xin LI <delphij@FreeBSD.org> | 2023-04-01 05:43:43 +0000 |
| commit | 285d85f4f96bf3b5aecccad865a8855724241c32 (patch) | |
| tree | 25026c91ca3f4759e54792fe5feeb904c339b6f1 | |
| parent | 4e703f445ef26f7658c859b0feedb4d830c837e4 (diff) | |
| download | src-285d85f4f96bf3b5aecccad865a8855724241c32.tar.gz src-285d85f4f96bf3b5aecccad865a8855724241c32.zip | |
arcmsr(4): Fix reading buffer empty length error.
MFC after: 2 weeks
| -rw-r--r-- | sys/dev/arcmsr/arcmsr.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/sys/dev/arcmsr/arcmsr.c b/sys/dev/arcmsr/arcmsr.c index dcb940bf339c..ac56c072cd38 100644 --- a/sys/dev/arcmsr/arcmsr.c +++ b/sys/dev/arcmsr/arcmsr.c @@ -87,6 +87,7 @@ ** scatter-gather count large than some number ** 1.50.00.03 05/04/2021 Ching Huang Fixed doorbell status arrived late on ARC-1886 ** 1.50.00.04 12/08/2021 Ching Huang Fixed boot up hung under ARC-1886 with no volume created +** 1.50.00.05 03/23/2023 Ching Huang Fixed reading buffer empty length error ****************************************************************************************** */ @@ -144,7 +145,7 @@ __FBSDID("$FreeBSD$"); #define arcmsr_callout_init(a) callout_init(a, /*mpsafe*/1); -#define ARCMSR_DRIVER_VERSION "arcmsr version 1.50.00.04 2021-12-08" +#define ARCMSR_DRIVER_VERSION "arcmsr version 1.50.00.05 2023-03-23" #include <dev/arcmsr/arcmsr.h> /* ************************************************************************** @@ -1555,8 +1556,10 @@ static void arcmsr_iop2drv_data_wrote_handle(struct AdapterControlBlock *acb) /*check this iop data if overflow my rqbuffer*/ ARCMSR_LOCK_ACQUIRE(&acb->qbuffer_lock); prbuffer = arcmsr_get_iop_rqbuffer(acb); - my_empty_len = (acb->rqbuf_lastindex - acb->rqbuf_firstindex - 1) & - (ARCMSR_MAX_QBUFFER-1); + if (acb->rqbuf_lastindex >= acb->rqbuf_firstindex) + my_empty_len = (ARCMSR_MAX_QBUFFER - 1) - (acb->rqbuf_lastindex - acb->rqbuf_firstindex); + else + my_empty_len = acb->rqbuf_firstindex - acb->rqbuf_lastindex - 1; if(my_empty_len >= prbuffer->data_len) { if(arcmsr_Read_iop_rqbuffer_data(acb, prbuffer) == 0) acb->acb_flags |= ACB_F_IOPDATA_OVERFLOW; |