Re: [tpmdd-devel] [PATCH] TPM: Let the tpm char device be openable multiple times

2012-10-15 Thread Jason Gunthorpe
On Mon, Oct 15, 2012 at 05:49:22PM +0100, Alan Cox wrote: > > > > Using open/close is an interesting idea, but it wouldn't work. open() > > > > is coded to return EBUSY if another process has it open, rather than > > > > block, and spinning on open would be unacceptable. > > > > > > Hmm, maybe

Re: [tpmdd-devel] [PATCH] TPM: Let the tpm char device be openable multiple times

2012-10-15 Thread Alan Cox
On Mon, 15 Oct 2012 10:39:45 -0600 Jason Gunthorpe wrote: > On Mon, Oct 15, 2012 at 08:35:09AM +, peter.hu...@infineon.com wrote: > > > From: Jason Gunthorpe [mailto:jguntho...@obsidianresearch.com] > > > > > Using open/close is an interesting idea, but it wouldn't work. open() > > > is

Re: [tpmdd-devel] [PATCH] TPM: Let the tpm char device be openable multiple times

2012-10-15 Thread Jason Gunthorpe
On Mon, Oct 15, 2012 at 08:35:09AM +, peter.hu...@infineon.com wrote: > > From: Jason Gunthorpe [mailto:jguntho...@obsidianresearch.com] > > > Using open/close is an interesting idea, but it wouldn't work. open() > > is coded to return EBUSY if another process has it open, rather than > >

RE: [tpmdd-devel] [PATCH] TPM: Let the tpm char device be openable multiple times

2012-10-15 Thread Peter.Huewe
-Original Message- > From: Jason Gunthorpe [mailto:jguntho...@obsidianresearch.com] > Using open/close is an interesting idea, but it wouldn't work. open() > is coded to return EBUSY if another process has it open, rather than > block, and spinning on open would be unacceptable. Hmm,

RE: [tpmdd-devel] [PATCH] TPM: Let the tpm char device be openable multiple times

2012-10-15 Thread Peter.Huewe
-Original Message- From: Jason Gunthorpe [mailto:jguntho...@obsidianresearch.com] Using open/close is an interesting idea, but it wouldn't work. open() is coded to return EBUSY if another process has it open, rather than block, and spinning on open would be unacceptable. Hmm, maybe

Re: [tpmdd-devel] [PATCH] TPM: Let the tpm char device be openable multiple times

2012-10-15 Thread Jason Gunthorpe
On Mon, Oct 15, 2012 at 08:35:09AM +, peter.hu...@infineon.com wrote: From: Jason Gunthorpe [mailto:jguntho...@obsidianresearch.com] Using open/close is an interesting idea, but it wouldn't work. open() is coded to return EBUSY if another process has it open, rather than block, and

Re: [tpmdd-devel] [PATCH] TPM: Let the tpm char device be openable multiple times

2012-10-15 Thread Alan Cox
On Mon, 15 Oct 2012 10:39:45 -0600 Jason Gunthorpe jguntho...@obsidianresearch.com wrote: On Mon, Oct 15, 2012 at 08:35:09AM +, peter.hu...@infineon.com wrote: From: Jason Gunthorpe [mailto:jguntho...@obsidianresearch.com] Using open/close is an interesting idea, but it wouldn't

Re: [tpmdd-devel] [PATCH] TPM: Let the tpm char device be openable multiple times

2012-10-15 Thread Jason Gunthorpe
On Mon, Oct 15, 2012 at 05:49:22PM +0100, Alan Cox wrote: Using open/close is an interesting idea, but it wouldn't work. open() is coded to return EBUSY if another process has it open, rather than block, and spinning on open would be unacceptable. Hmm, maybe write a small pass

Re: [tpmdd-devel] [PATCH] TPM: Let the tpm char device be openable multiple times

2012-10-01 Thread Jason Gunthorpe
On Mon, Oct 01, 2012 at 09:07:11AM +, peter.hu...@infineon.com wrote: > Hi Jason, > > one quick question: > - TPM_BUFSIZE = 4096, > [...] > + u8 data_bufferx[2048]; > > Why do you half the buffer size? I missed 7f366784f5c2b8fc065 when I rebased the patch, thanks! Jason -- To

RE: [tpmdd-devel] [PATCH] TPM: Let the tpm char device be openable multiple times

2012-10-01 Thread Peter.Huewe
Hi Jason, one quick question: - TPM_BUFSIZE = 4096, [...] + u8 data_bufferx[2048]; Why do you half the buffer size? Thanks, Peter -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at

RE: [tpmdd-devel] [PATCH] TPM: Let the tpm char device be openable multiple times

2012-10-01 Thread Peter.Huewe
Hi Jason, one quick question: - TPM_BUFSIZE = 4096, [...] + u8 data_bufferx[2048]; Why do you half the buffer size? Thanks, Peter -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at

Re: [tpmdd-devel] [PATCH] TPM: Let the tpm char device be openable multiple times

2012-10-01 Thread Jason Gunthorpe
On Mon, Oct 01, 2012 at 09:07:11AM +, peter.hu...@infineon.com wrote: Hi Jason, one quick question: - TPM_BUFSIZE = 4096, [...] + u8 data_bufferx[2048]; Why do you half the buffer size? I missed 7f366784f5c2b8fc065 when I rebased the patch, thanks! Jason -- To unsubscribe